$850 billion. That’s what retail and e-commerce returns will cost in 2026, generating 8.4 billion pounds of landfill waste — and a surprising share of it involves products that worked perfectly. They just didn’t look the way people expected. About 22% of consumers return items because the product looked different in person than it did online, and for home goods and textiles, that number climbs higher. The culprit has a name: metamerism — the way colors shift under different light sources, so the navy sectional and the matching throw pillow that looked identical on your screen clash under your living room LEDs. Don Carli, founder of Nima Hunter and Senior Research Fellow at the Institute for Sustainable Communication, joins Sustainability In Your Ear to explain why this keeps happening and what it would take to stop it.

The fix isn’t a moonshot. The relevant standards — glTF for digital rendering and ICC Max for physical material appearance — already exist and were designed to be connected. Digital textile printing already makes it possible to produce fabrics with pigment recipes that match under any lighting condition, not just one. What’s missing is coordination: brands putting spectral consistency requirements into their supplier purchase orders, the same way the GMI certification transformed packaging quality once Target and Home Depot required it. The Khronos 3D Commerce Working Group has already standardized how products look across digital screens — the next step is bridging that standard to the physical object. When we get this right, a sofa stays in the home it was ordered for instead of traveling a thousand miles back to a distribution center and ending up in a landfill. That’s what circularity looks like when it’s applied to the seam between the digital world and the physical one. Follow Don’s work at WhatTheyThink.com and on X at @DCarli.

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Interview Transcript

Mitch Ratcliffe  0:08

Hello — good morning, good afternoon, or good evening, wherever you are on this beautiful planet of ours. Welcome to Sustainability In Your Ear, the podcast conversation about accelerating the transition to a sustainable, carbon-neutral society. I’m your host, Mitch Ratcliffe. Thanks for joining the conversation today.

Let’s take another look at the topic of e-commerce returns and how to reduce them by tuning the economy for less waste. We’re going to start with making what you see online look like what you receive on your doorstep.

Now here’s a number that should stop you in your tracks the next time you shop online: $850 billion. That’s how much retail and e-commerce returns will cost in 2026. And here’s another number: 8.4 billion pounds of landfill waste generated by those returns in a single year — roughly the same as burying 10,500 fully loaded Boeing 747s in the ground. That’s a lot of waste.

Now you might assume that most of these returns are about fit — pants that don’t fit, shoes that pinch. But 22% of consumers report returning items because the product looked different in person than it did online, and for home goods and textiles categories, where fit isn’t the issue, that percentage climbs even higher. A sofa that passes every quality specification still gets returned because it clashes with the throw pillow that also passed every specification — when they don’t look alike in the home, both can end up in a landfill, because repackaging costs more than recovery.

Today’s conversation is about why that happens and what we can do about it. My guest today is Don Carli. Don’s a good friend and the founder of the consulting firm NEMA Hunter Incorporated. Two of Don’s recent articles on the site What They Think got me thinking about how an apparently esoteric discussion of color calibration and spectral profiles actually represents something much larger — the fine-tuning we can do to the 20th-century industrial system that was never designed to connect digital promises to physical reality.

Don is also a Senior Research Fellow with the nonprofit Institute for Sustainable Communication, where he has directed programs on corporate responsibility, sustainability, advertising, marketing, and enterprise communication. He’s also a member of the board of advisors for the AIGA Center for Sustainable Design and a member of the Institute for Supply Management.

So here’s why this matters beyond the print and packaging industry, where Don has spent most of his career. The 20th century built industrial systems optimized for mass production: make a lot, ship it out, and hope people keep it. These systems created enormous efficiencies on the one hand, but they also created enormous waste — often hidden in the seams between suppliers, brands, and retailers, where no single stakeholder owns enough of the problem to force a solution. In fact, it really means nobody lost enough money to care.

What Don’s work reveals is that we now have the technical architecture to fine-tune these legacy systems — not replace them, but recalibrate them. The standards exist. The measurement hardware exists. The digital rendering pipelines exist. What’s missing is the coordination: getting brands, retailers, and others to share data they currently hold separately, and to recognize that the costs they’re each absorbing individually are symptoms of the same system failure — a failure of color calibration.

And this is what sustainability can look like in practice: not moonshot reinventions, but the patient technical work of closing gaps between digital and physical, between specification and reality, and between what we promise customers and what we deliver. If we get this right, we can reduce waste, cut costs, and rebuild trust with consumers who’ve learned to expect that what they see online isn’t quite what they’re going to get.

You can follow Don’s work on X. His handle is @DCarli — that’s spelled D-C-A-R-L-I, all one word, no space, no dash.

So can we calibrate what we see online with what we experience when we open a package, reducing the need to return a purchase? Let’s find out after this brief commercial break.

[COMMERCIAL BREAK]

Mitch Ratcliffe  4:29

Welcome to the show, Don. How are you doing today?

Don Carli  4:31

Fantastic, Mitch. I’m really glad to be here with you today and looking forward to the conversation.

Mitch Ratcliffe  4:37

Always great to talk with you, Don. This came up in our discussions over the past couple of months, and then I read the article and wanted to follow up. To start off, can you walk us through a typical scenario? A customer orders a navy sectional and a matching throw pillow from different suppliers. They appear to be the same color — they both pass all the quality specifications we’ve talked about — but under the living room lights, the consumer finds they clash. What happened between the approved image and her disappointment? Where did the system break down?

Don Carli  5:15

We’ve all had this experience at some point in our lives. In part, it’s because of the nature of human perception. We would like to think that color is a constant thing, but color is an interaction of multiple variables.

One variable is the light source — specifically, the distribution of wavelengths in that light. As you know, the visible spectrum is a small part of all the radiation there is. There’s ultraviolet light you can’t see, there’s infrared light you can’t see, and then there’s all the colors in between — the ROYGBIV: red, orange, yellow, green, blue, indigo, violet — the colors we’re familiar with. Every light source has a different distribution of those energies.

Second, the material an object is made of has its own capacity to absorb different wavelengths, and that can vary. So you have variation in the energies emitted by the light source, variation in the energies absorbed and reflected by the object, and then there’s the viewer. Our visual system takes up a big part of our brain — it’s not just our eyes, but our eyes have a lot to do with it. Some of us are colorblind, for example, and in other cases, color is simply not a constant thing.

I worked with the Bauhaus artist Josef Albers for many years — he wrote the book The Interaction of Color. He used to say, ‘When you put one color next to another color, you get a third color for free,’ because those two colors interact with each other.

To put it simply: you put on a pair of socks and a pair of pants in your bedroom under incandescent light. The pants are brown, the socks are brown. You go out into the daylight. The pants look green. The socks are still brown. What happened? The light changed. Because daylight has more energy at one end of the spectrum, it reflects more blue light, making the brown look greener.

Mitch Ratcliffe  7:56

That’s really interesting to think about — how we’ve moved from an era of commerce where, say, items in the Sears catalog were originally sketched, versus photographed. As we introduced greater verisimilitude in our catalogs, or on Amazon —

Don Carli  8:17

We set expectations differently. Exactly.

Mitch Ratcliffe  8:20

So how should we think about the expectations we’re setting — both as sellers of things and as consumers? How should we be thinking about this?

Don Carli  8:30

In part, most of this is simply not taught. Most students in grade school, high school, or even university are not given any exposure to the psychology of human perception. There’s a physiological and psychological basis to all of this, and we just don’t know about it.

The problem has always existed. What’s happened with e-commerce — and with sophisticated computer graphic rendering of objects that don’t yet exist in the real world but look real — is that we’re setting expectations. On my screen I see this couch. It looks brown. The pillows look brown. So I expect that when they arrive, they’re both going to look brown.

Unfortunately, the lighting in homes now is no longer even incandescent. LEDs have really unusual spectral curves — they can be the problem. If I had been able to see what those items were going to look like under the lighting in my home, I might be less disappointed. I’d say, ‘Oh, wait — they don’t match.’ But in developing the systems for e-commerce, the companies that develop software for rendering — the tools designers use to develop the rendering of images for websites and monitors — simply don’t take these things into consideration.

Mitch Ratcliffe  10:10

Our economy was massified in the 20th century but it’s moving toward personalization in the 21st century. And what you’re describing — what you named in the article — is metamerism.

Don Carli  10:21

It’s not my term. It’s metamerism — or ‘metamerism,’ yes. That’s fine.

Mitch Ratcliffe  10:27

This phenomenon, combined with changing lighting technology and the changing nature of our homes — which can allow more or less light in, and offer a variable lighting palette —

Don Carli  10:37

A variable lighting palette, yeah.

Mitch Ratcliffe  10:38

— suggests that the palette will always be changing. So how do we create consistent expectations among consumers when we’re trying to communicate what we offer?

Don Carli  10:57

Well, standards help to begin with. We do not have a set of coordinated standards today that allow the designer to anticipate the observer’s environment and lighting conditions for a given product. Second, we don’t have standards in place to communicate between what the designer intends and what the manufacturer produces — because it is possible to create pigments and dyes that do not exhibit metamerism. Really.

It’s been standard practice in some industries where it matters. If you go to an informed paint company and say, ‘I want a non-metameric match of this swatch,’ they would use a device called a spectrophotometer, which measures the absorption curve of the pigments employed — so that under any lighting condition, the appearance doesn’t change, because the curves have been matched.

But I can create a match that only looks correct under one light source, which is typically what happens when people revert to either a monitor — which only has three emitters: red, green, and blue — or printing, where typically you have cyan, magenta, yellow, and black. If you want to truly match, you have to match the curve.

New printers being used for digital textiles actually have 10 channels, and it is possible to use pigments across those channels to make the absorption curve of the material non-metameric — or at least less metameric. We’re waiting for standards to come together, and that will only happen, I believe, if the brands suffering the greatest economic loss from this mismatch problem take action to put the requirements in their purchase orders and to support pilots that address that 22% of returns due to color perception that you described.

Mitch Ratcliffe  13:27

You do point out that IKEA, Amazon, Wayfair, and others have funded the Khronos 3D Commerce Working Group to ensure that products look consistent across different apps and websites. So they want consistency when rendered on a digital screen, but they’re apparently okay with the fact they don’t look the same when they arrive?

Don Carli  13:54

Yes, I like the disconnect. It’s interesting. First of all, it would require collaboration across industry — across groups that don’t typically talk to each other. I don’t think it’s willful. I think it’s more like, ‘Wow, they just haven’t gotten around to that.’ Nobody fully realized how much was at stake. And the potential for a connection between the two standards that do exist is actually very good and straightforward, because they’re both extensible standards.

What’s needed — as I said — is for the businesses that are right now losing approximately $850 billion a year due to returns to ask: How much of that is attributable to consumers who’ve been given permission by e-commerce companies to say, ‘Something doesn’t look right, so I want to return it’? We’ve made it easy to return things.

Mitch Ratcliffe  15:09

The customer was always right.

Don Carli  15:11

That’s correct. And it’s going to be hard to put that one back in the bottle. So now we have to ask: out of the $850 billion — which is just the retail cost of the goods, not the cost of reverse logistics, not the cost of reprocessing, not the disposal of that returned product to landfill or incineration — if you take it all together, it’s probably $1.25 trillion, maybe even $1.5 trillion. And if you said, ‘Okay, but how much of that is because somebody said the colors don’t match?’ — even being very conservative, say 10% — that’s still enough money to justify addressing the root cause of the problem.

Mitch Ratcliffe  16:00

$150 to $200 billion….

Don Carli  16:03

Just rounding error, right? So you could say to companies like Adobe — that develop the software for rendering objects that are going to be manufactured — take IKEA as an example. IKEA doesn’t fill its catalogs, whether online or physical (though there’s no longer a physical catalog), with actual photography. Those are computer-generated images. They look real, but they don’t exist in the physical world when rendered. Very often, the product isn’t manufactured until after you’ve bought it — you bought it on the basis of a computer graphic rendering that looks photorealistic. It’s called Physically Based Rendering.

So if those systems were specifying color with the manufacturing process in mind — which is very often digital textiles printing — they could choose their colors to be less subject to metamerism, or even to specifically eliminate metamerism. They could also provide the ability to predict: run the model through a set of tests to see, ‘Is this design going to be subject to metamerism?’ And carry that logic forward to the manufacturer. They’d have to put that in their purchase orders. They’d have to bridge two standards — one called glTF, the other called ICC Max.

The point is, the consumer doesn’t need to know any of this. The consumer needs to understand that it’s possible to make things match under different lighting conditions — or at least to have less divergence from their expectations under different lighting conditions.

Mitch Ratcliffe  17:58

I agree that the consumer should be able to expect that. What I hear is that so far, the pain hasn’t been great enough. But we’re also at a point where simply reducing the waste would be worthwhile on its own, with other benefits as well —

Don Carli  18:10

Oh, absolutely. But the financial ones alone —

Mitch Ratcliffe  18:15

The financial ones are enough? Yes. And then all the environmental and social costs of returns on top of that. But let’s talk about how to actually hack toward a solution. Is it possible now — or over the course of the next decade, say — for me to have a phone app that I use in my home? I sample the light in the morning, I sample the light at noon, I sample it at sundown, and in the evening — sometimes with external light, sometimes with just internal. I could say, ‘This is my light profile. Give me things that will look like what I expect.’

Don Carli  19:00

That’s a great question. The question is: would the average consumer go to that extent? Probably not. But the retailer could do what amounts to a survey of the whole home that the products are going to go into. If it’s a major purchase — a couch, carpets, a new home — you could model the interior of that house very easily.

Technologies like Matterport, for example, can scan the interior of a house and give you a virtual view of what it looks like — they use it in real estate all the time. So that’s possible. And it’s also possible to model different lighting scenarios: you say, ‘I’m going to put in LED lighting with variable color temperature, so during the day I may look at it under one light, and at night it’s going to be warmer.’ You can factor in where natural light comes in through windows across the year.

But that may be overkill for most consumers. It might be appropriate for businesses — especially places where the harmony of floor coverings, wall coverings, and furnishing objects matters. Still, it shouldn’t be necessary for the average consumer.

Phones are increasingly gaining the ability to sense color in a spectral sense. I think within three years, that capability should be standard in most phones as a matter of course, and more specialized devices will be available for around $100 if you want them. But I think it’s really incumbent on the retailer and the brands — not on the consumer — to meet expectations first and foremost. And I think an increasing number of consumers who care about environmental and social costs are going to put that expectation on the retailer and the brand: model the environment, predict the degree to which the products being manufactured are subject to metamerism. Those variables can be measured and controlled in design and manufacturing so that the in-home or in-store environment is less subject to lighting variation affecting the perception of color match.

Mitch Ratcliffe  21:55

So I think this is a great place to stop and take a quick commercial break, because we’ve set the stage — and the lighting — to talk about what’s going to come next. Let’s figure out the hack. Stay tuned. We’ll be right back.

[COMMERCIAL BREAK]

Mitch Ratcliffe  22:13

Welcome back to Sustainability In Your Ear. Let’s get back to my conversation with my friend Don Carli. He’s founder of NEMA Hunter, a market research and product design advisory firm in New York City.

Don, so we understand the variability of light, the variability of settings, the combination of colors — all of these affect our perception of color. And we talked about the fact that phones will have increasing photographic analysis capabilities, so they can sense the full spectrum, not just what we see but the entire range of light affecting our perception. But as you say, it really is incumbent upon the retailer to have a solution that makes something look like my expectation when it arrives at my home. Is this a suggestion that the future of retail is more personalized — that there may be personal shoppers who come to your home early in a brand relationship and do a scan, or who give you the tool? Maybe they send it to you and you return it after completing your color profile. Are we at the beginning of really tuning the economy to deliver exactly what we want so that waste can be reduced?

Don Carli  23:29

I think there are examples of it already in place. There’s a very interesting company that grew out of a team of Navy SEALs and special operations people who had to model environments they were going to enter — and they couldn’t do that using big, complex systems. They needed a hack. They were able to take imagery from various sources and build a 3D model reconstruction of a building so they could plan their approach. One of them left and started a company called Hover.

This isn’t a commercial for Hover, but it’s an interesting case. Hover solved a problem for people who wanted to remodel the exterior of their homes. You could take your phone, take six to eight photos of your house from the exterior, send those photos to Hover, and they would create a 3D reconstruction of your home. Then they worked with manufacturers of siding, roofing, and windows, and allowed the builder to generate not only an estimate of what it would cost to put new siding and windows on your house, but a rendering of what it would look like. The precedent is there: the consumer had the device, nobody had to go out to do an estimate, the contractor loved it because they didn’t have to send anyone to measure — all done accurately using cell phone imagery.

Matterport is another company that makes a device for interiors and does the same thing. And there are small sensors that a retailer could send you that measure color temperature of light — but I don’t think that will be strictly necessary.

Mitch Ratcliffe  25:31

Nor necessarily environmentally responsible, to send out loads of sensors.

Don Carli  25:34

Exactly. So for the retailer, like Radio Shack, if it’s an in-store environment, that’s one thing — they do have the ability to simulate different lighting conditions in-store. Think of it like going to an audio shop —

Mitch Ratcliffe  25:54

You can’t do that anymore, but okay.

Don Carli  25:56

Just imagine going to buy a stereo, or to an audiophile shop —

Mitch Ratcliffe  26:03

We’re showing our age, knowing what that is.

Don Carli  26:05

They bring you into a listening room. The point is, it’s constructed for the purpose of evaluating what something is likely to sound like in your home. I think we can do the same thing in-store with variable lighting.

But online is becoming e-commerce where items are never in a store. You order from a computer-rendered image on your screen, and after your order is placed, the item is manufactured. That’s the link that has to be established: the link between the creator of the design for the object and the supply chain instructions provided to the manufacturer, so that the objects are not subject to metamerism — so they are less subject to variation in the lighting conditions in your home. It is a matter of giving the correct instructions about the materials to be used, and specifying how they’re to be measured by the manufacturer. The brands that design the couch, the pillow, the carpet, the curtain, the flooring — they should own the equipment to do the measurement and support the linkage of the standards that communicate how to maintain color consistency across different lighting and viewing conditions, so the consumer isn’t disappointed.

Mitch Ratcliffe  27:41

This brings me to another concept you introduced, which is the appearance bill of materials — which is in many ways similar to the digital product passports we’ve talked about on the show a number of times, which describe a product’s components and potentially how to recycle it. But this color profile — what would be involved in making that happen at scale? What would it look like to make that a common practice for a furniture retailer, for instance?

Don Carli  28:10

Think of recipes. The way a fabric is produced is changing because of digital printing. We used to make fabric in large quantities using dyes — extremely polluting, very complex — or with high-volume screen printing using fixed screens. Increasingly, fabric printing is achieved digitally, where you can print just one yard or 10 yards of a material using any palette of pigments, matched not just to look correct under one lighting condition, but to look consistent under any lighting condition.

The example of metamerism is: if I have two objects that are supposed to match, and under one lighting condition they do match, but under another they don’t — that is metameric. It changes. But if I blend, or use the right pigment recipe on a given substrate material, they will match regardless of the lighting condition. The pillow matches the couch, the wall covering matches the floor covering.

To do that, you have recipes. I’m going to use this combination of inks, and I have to measure them with a spectrophotometer. The specifier has to tell the manufacturer what the material characteristics are. It’s the same as saying, ‘Use butter, sugar, and flour’ — but not all butter, sugar, and flour are the same. Or like architects who say, ‘Use concrete, aluminum, steel, and wood’ — but what’s the actual recipe for the steel, the concrete, the wood? We have to be more specific at the design and manufacturing stages.

It is kind of like a digital product passport. The standard for glTF, which is used for Physically Based Rendering on monitors, is consistent for rendering on screens — but it doesn’t extend to the world of physical objects, inks, and substrates.

Mitch Ratcliffe  30:59

So that’s the link. Thank you. You’ve also pointed out that the GMI certification — which Target, Home Depot, and CVS began to require, and which describes packaging — was broadly accepted once those brands introduced it. Would color matching with the guarantee that it will look like what you saw when you receive it be a significant differentiator — a value-added differentiator — that would set a brand apart if they embraced and practiced it consistently?

Don Carli  31:34

Why not? We know that consumers are disappointed enough to go through the return process — and it’s not simple. It’s an annoyance. You’re putting people out of their way. They want their couch, they want their cushions, they want their floor covering. They don’t want to go through what it takes. It’s going to be another two weeks, and I’ve got to document all of this, and I have a party this Friday — we’re getting married, whatever it is.

So I think the demand is there. And what GMI established reflects something I believe has been true in manufacturing as long as I’ve known it: manufacturers are going to do what their customers call them to do. If the requirement in the purchase order is that you must adopt this standard or use this material, you don’t argue — if you want the work, you do it. But if you leave innovation in materials to manufacturers and expect them to market and sell it, that’s not their strength. They’re not marketers.

On the other hand, retailers and brands are marketers — and ultimately, the cost is not just economic but environmental and social. That’s where I think today’s consumers, if made aware, will be able to apply enough incentive to brands to build those linkages, use those standards to minimize the cost of returns and the environmental impact of returns, and have a positive impact on customer satisfaction, customer loyalty, and the ability to attract consumers for whom systems thinking and circularity matter.

Mitch Ratcliffe  33:30

So the cost of these returns — which we’ve estimated in the $1.3 to $1.5 trillion range — who actually ends up paying that? Would solving this problem represent a tangible reduction in costs for consumers overall?

Don Carli  33:47

It is costing consumers in the end. Let’s say a retailer bought the product for 25% of the retail price. So the thing sold for $100 but cost them $25. When they say they lost $850 billion, they’re estimating that at the full retail price — but it only cost them $25.

Mitch Ratcliffe  34:19

Of course, because that gives them an advantage in taxes — but if —

Don Carli  34:23

If in fact they’re losing 25% of their sales to returns, that’s still going to factor into what they mark things up to recover those costs. It does impact the cost to consumers in the end. And then there are the real costs associated with reverse logistics — shipping it back from you to the distribution center — and then that has to be reprocessed: someone has to inventory it now that it’s been returned, inspect it to see if it’s viable for resale, find a resale partner. Or, as some retailers now do, they simply keep them in huge containers labeled as ‘lot number four’ and have people bid on them sight unseen — unpack those, find the few things in the box that were worth something, and discard the rest.

Mitch Ratcliffe  35:33

So the consumer today expects greater and greater personalization, as you’ve described. On-demand manufacturing is a potentially scalable solution that’s beginning to emerge. But if we don’t master this metameric strategy, returns may actually increase — because the expectation is even greater that it should look exactly like it did when I ordered it.

Don Carli  35:59

Yeah. Appearance mismatch is not the greatest reason for returns — but it’s a substantial percentage.

Mitch Ratcliffe  36:12

My point is to think systemically, rather than just about this particular issue. Is this the right time for us to move toward on-demand manufacturing — particularly now that we want to reduce imports? And if we do that, who should convene the effort to create consistent perception of color and quality for that next generation of a much less wasteful economy?

Don Carli  36:43

I think it ultimately falls to the brands and the retailers, as well as the technology providers for rendering — for the design and rendering of the objects — because circularity and circular thinking is a systems design challenge. You want to design the problem out of existence, rather than trying to cope with it downstream.

There’s no question that the greatest potential leverage is through a better design process that anticipates these downstream factors that lead to returns — whatever they are, whether it’s appearance, fit, or any other reason why people return things. The ability to predict through true digital twins of the object is one key element. You need the NVIDIAs of the world, the Adobes, the Hewlett-Packards, and the instrument manufacturers who can measure color and surface characteristics — the things that allow you to define the recipe for making the object, as well as the recipe for rendering it on screen.

Those are the key stakeholders: the brands using those tools, the companies providing those tools, and the standards bodies that help to encode them in open, extensible standards that allow businesses to communicate one-to-many, instead of being locked into proprietary one-to-one communication chains.

Mitch Ratcliffe  38:26

If a brand is listening, what should their first diagnostic step be? Where’s the right place to begin?

Don Carli  38:36

The first step, of course, is to have a breakdown of the reasons for returns. If they want to address appearance mismatch, they need to know what percentage of their returns are reported by consumers as: ‘The product I received didn’t meet my expectations in appearance compared to what I saw on my screen or in the store.’ They need to know first: is this a problem big enough to make a business case for addressing it?

In most cases, I think they’ll find that if it’s 10%, 15%, or 20% of returns, that’s material. And if they looked at it not just economically but in terms of environmental and social impact — triple bottom line, if you will — I think they can make a business case for why they should seek out a group of like-minded brands to address the root cause through standards and paid pilot programs with manufacturers: to establish and prove that a workflow is possible, practical, and delivers results that reduce cost in a material way, reduce environmental impact in a measurable way, and have a positive impact on customer satisfaction, loyalty, and the ability to attract consumers for whom systems thinking and circularity matter.

Mitch Ratcliffe  40:15

You do a lot of product research and market research. Are brands thinking about this?

Don Carli  40:21

Not enough. Not enough. I believe brands like IKEA do take it quite seriously — and maybe that’s one of the luxuries of being a privately owned entity. So I think we can look to brands like IKEA for leadership. They’ve exhibited that in the past and can continue. But one brand can’t solve this. This is a bigger problem than any one brand can handle.

I think the path forward is really through a coalition of brands that work together and share the costs, the risks, and the benefits of connecting these existing standards — to the benefit of not just current consumers, but consumers going forward. And I think it will reduce the impact on the environment, help make better use of our manufacturing capacity and digital technology, and support onshoring more of our production. That’s an important way to minimize risk — not just the risk of returns, but supply chain risk as well.

Mitch Ratcliffe  41:39

What you’re describing is an optimized system that we don’t currently have. I know we’ve only scratched the surface of the color perception problem here, Don. Thank you for helping me understand it. How can folks follow what you’re working on?

Don Carli  41:53

I write on this topic in an industry publication called WhatTheyThink.com. And there is an active discussion taking place within the Khronos Group, 3D Commerce, and related standards bodies about this general concept of Physically Based Rendering. In the printing world, there’s another group called the International Color Consortium — ICC.org — that has been looking at the problem from a manufacturing perspective: how do you manage appearance, not just color but appearance overall, because it’s not only the color of a thing that can differ, sometimes it’s the surface characteristics or texture. These standards take both into consideration.

I think some preliminary discussions are starting to emerge — whether in Reddit or in these two groups, which are open — that are beginning to look at how these things connect.

Mitch Ratcliffe  42:59

There’s a saying that an airplane is a set of standards in flight. What we’re talking about here is the setting of a standard set of expectations about how our economy should work efficiently. I hope folks take to heart what we talked about today. I want to thank you for your time, Don; this was a fascinating conversation.

Don Carli  43:19

I think it can have a profound impact on the amount of waste that goes to landfill, and I think it will also improve the ability to satisfy increasingly conscious consumers along the way. Thank you, Mitch. Take care.

[COMMERCIAL BREAK]

Mitch Ratcliffe  43:49

Welcome back to Sustainability In Your Ear. You’ve been listening to my conversation with Don Carli, founder of NEMA Hunter, a market research and product design advisory firm in New York. Don’s commentary on color perception, metamerism, and the gaps in our digital-to-physical rendering pipeline appears regularly at WhatTheyThink.com — all one word, no space, no dash — and you can follow him on X at @DCarli, that’s D-C-A-R-L-I.

This conversation started with a sofa and a throw pillow that refused to match, and it ended somewhere much larger. The $850 billion in annual e-commerce returns we discussed — growing toward $1.25 to $1.5 trillion when you add reverse logistics and disposal costs — is what happens when a 20th-century industrial system tries to serve 21st-century expectations without changing its underlying architecture. The system was designed to produce at scale and absorb returns as a cost of doing business. The consumer was always right. The platform made returns frictionless. And what got lost in the middle — in landfills, in incinerators, and in the carbon cost of reverse logistics — was invisible to the balance sheet and to the customer who clicked ‘return.’ In other words, we engineered a system to overwhelm people with choice so that they would inevitably buy, but at the cost of tremendous waste.

So Don isn’t just describing a color problem. It’s a calibration problem — and calibration is a systems problem. You heard about all the parts of the solution that are available already. What doesn’t exist is a coordination layer: the shared commitment by brands and retailers to making a product and the recipe for showing it on screen speak the same language, so that it represents things accurately across a variety of different lighting settings.

The transition Don is pointing toward is from mass manufacturing to what we might call calibrated manufacturing — production designed not just to meet a specification, but to meet the specific expectations of one person. Personalized manufacturing. The on-demand, digital-first model that’s already emerging will only work if the variety of perceptions we experience is accounted for from the start. If we move to on-demand without solving the metamerism problem, Don warned, returns will increase, not decrease. We will have built a faster, more responsive system for disappointing people.

The circular economy framing that anchors so much of this podcast is usually applied to materials — keep them in use, close the loop on plastics, design products for disassembly and reuse. But Don’s argument adds a dimension we don’t talk about enough: design for reduced returns is design for circularity too. The waste reduction potential is real, and it needs to happen upstream — at the design and specification stage — before a single unit of the product actually ships.

This is what tuning the economy looks like in practice: not a moonshot reinvention of everything, but the patient technical work of closing the gaps — the many gaps between what we promise and what we deliver as businesses. The leverage points are well defined. Brands and retailers that own product specifications need to bridge the color standards challenge in their purchase orders. And consumers who are already demanding more and returning more can apply market pressure too, especially the growing segment of people for whom systems thinking and environmental impact are part of how they evaluate a brand. But we have to communicate that to the brand and to the policymakers around that market in order to drive systemic change.

Don’s closing thought is what stays with me: when we actually tune the system to deliver what people want and expect, we can stop producing waste that nobody intended and nobody wants. That’s not just good business. That’s what a circular economy looks like in practice when it’s applied to the seam between the digital world and the physical one — the place where, right now, billions of pounds of material quietly disappear into the ground.

We’ll continue to explore this — we’ll probably have Don back to talk more — and in the meantime, I hope you take a look at our archive of more than 550 episodes of Sustainability In Your Ear. We’re in our sixth season, folks, and I guarantee there’s an interview you’re going to want to share with a friend or member of your family. And by the way, writing a review on your favorite podcast platform will help your neighbors find us — because folks, you are the amplifiers that can spread more ideas to create less waste. Please tell your friends, your family, your co-workers, the people you meet on the street, that they can find Sustainability In Your Ear on Apple Podcasts, Spotify, iHeartRadio, Audible, or whatever purveyor of podcast goodness they prefer.

Thank you, folks, for your support. I’m Mitch Ratcliffe. This is Sustainability In Your Ear, and we will be back with another innovator interview soon. In the meantime, take care of yourself, take care of one another, and let’s all take care of this beautiful planet of ours. Have a green day.

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Make Earth Day 2026 the next step in your response to the environmental damage inflicted by recent U.S. policy reversals that have gutted decades of effort to preserve the climate our species—and all of nature—depends on. EarthDay.org has declared this year’s mission, to make “Our Power, Our Planet” the basis of celebrations on April 18th, a day of action, and April 22nd, the traditional date for Earth Day. Don’t just sit and savor nature, step up to the resist the forces dismantling the environmental protections that followed from the first Earth Day in 1970, which led to the creation of the Environmental Protection Agency, Clean Water Act, and Clean Air Act, among so many important national efforts.

Post and share Earth911 posters to help people think of the planet first, every day. Click the poster to get a larger image.

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The global market for natural health products now exceeds $300 billion, and parents are leading the charge — looking for gentler, plant-based alternatives to synthetic medicines for their kids. Some natural remedies have centuries of traditional use behind them. Others have meaningful clinical support. And a few carry real safety caveats that are easy to miss when you’re shopping for a more natural medicine cabinet.

Four ingredients cover a lot of ground: coconut oil, essential oils, honey, and apple cider vinegar. Here’s what the evidence says about each, including what to watch out for, especially with younger children.

Note: A trained medical professional is always your best resource for treating serious ailments. This article provides general information, not medical advice. Never delay or ignore professional care based on something you read online.

This article contains affiliate links that help fund our work.

1. Coconut Oil

Coconut oil earns its place in a natural medicine cabinet through sheer versatility. Applied topically, it works well as a balm for chapped cheeks, a diaper rash treatment for babies, a soothing after-bath moisturizer for dry skin, and as a carrier oil when diluting essential oils for topical use. It’s also a perfectly serviceable cooking oil — just keep separate containers to avoid cross-contamination between cosmetic and kitchen uses.

Look for unrefined, virgin coconut oil — it retains more of the naturally occurring medium-chain fatty acids (including lauric acid, which has demonstrated antimicrobial properties in lab studies) compared to refined versions. Nutiva Organic Virgin Coconut Oil is a consistently available option.

2. Essential Oils: Effective, But Use With Care

Essential oils are concentrated plant extracts potent enough to have real therapeutic effects, and potent enough to cause real harm if misused. For kids, the most useful are:

• Lavender oil soothes minor skin irritation, helps with relaxation, and has mild antiseptic properties. It’s one of the gentler oils for children. Plant Therapy Lavender Essential Oil is a reputable, widely available option.
• Tea tree oil (melaleuca) is a well-documented antiseptic useful for skin rashes and has shown effectiveness against head lice. NOW Tea Tree Oil is a reliable choice.
• Eucalyptus oil supports respiratory comfort when diffused and can be used in a natural chest rub for older children. Plant Therapy Eucalyptus Globulus is a good starting point. For children under 2, eucalyptus in any form should be avoided. For children ages 2–4, use only with extra caution and well-diluted.

Eucalyptus age limits: Eucalyptus age limits: The blanket warning “never use on children under 10” guidance circulating online is an overstatement. The European Medicines Agency concludes that eucalyptus used by inhalation, topically, or as a bath additive is appropriate from age 4, and that oral use is restricted to age 12 and up. Do not apply near the nose, mouth, or face of any young child. Robert Tisserand and Rodney Young’s Essential Oil Safety (2nd ed., 2014), the field’s standard reference, supports this more nuanced reading.

Lavender and tea tree and hormonal concerns with boys: Research published in the New England Journal of Medicine found a link between topical use of lavender and tea tree oils and hormonal disruption in prepubescent boys. Aromatherapy (diffusing) is the lower-risk alternative for this age group.

Always dilute essential oils. Undiluted oils should never be applied to a child’s skin. For children under 2, use a 0.5–1% dilution in a carrier oil (like coconut or almond oil). For ages 2–6, 1–2% is appropriate.

No peppermint for children under 30 months. Peppermint oil can increase seizure risk in very young children and should be avoided.

For a comprehensive reference, Johns Hopkins Medicine’s essential oil safety guide for children is a solid starting point. And check with your pediatrician before introducing new oils, especially for children with respiratory conditions.

3. Honey: Powerful Medicine — With A Critical Exception

Raw honey does considerably more than sweeten tea. Applied topically, it’s an effective treatment for acne, particularly raw honey, which retains more antimicrobial compounds. Manuka honey from bees that pollinate the New Zealand mānuka bush  has demonstrated well-documented antibacterial properties and is worth keeping on hand for wound care and throat soothing.

For throat relief, a spoonful of honey dissolved in warm water with lemon is effective for children over 1 year old. Look for raw Manuka honey rather than processed honey in a plastic squeeze bottle, which has been heated and filtered to the point of losing most of its beneficial properties.

Critical Safety Warning — Honey and Infants: The FDA, CDC, and American Academy of Pediatrics all recommend that honey never be given to children under 12 months of age — in any form, including baked goods, cereals, or foods that contain honey as an ingredient. Honey can harbor Clostridium botulinum spores, which can cause infant botulism, a serious and potentially fatal illness. Infants’ digestive systems are not mature enough to neutralize the spores. This restriction applies to raw honey, pasteurized honey, and honey in cooked or processed foods. After age 1, honey is safe.

4. Apple Cider Vinegar

Apple cider vinegar’s acidic properties make it useful for a handful of topical applications. Two cups diluted in bathwater can help soothe eczema flares; diluted 50/50 with water, it’s effective for sunburn relief and itchy skin.

Its strong taste makes internal use a tough sell for kids, but they can still benefit from external applications. As with honey, quality matters: get an unfiltered, unpasteurized brand that retains “the mother” — the strand-like protein-enzyme matrix that forms during fermentation. Bragg Organic Raw Apple Cider Vinegar is the go-to product and is widely available.

A note on internal use for older kids and adults: ACV is acidic enough to erode tooth enamel if taken undiluted or frequently. Always dilute in water and consult a healthcare provider before making it a regular supplement.

These four ingredients are a good starting point for your own natural healing remedies. Simple and straightforward, most will be readily available at your local health food store and are a cinch to apply or administer.

Building Your Natural Medicine Cabinet

These four ingredients give you solid coverage for common minor ailments — skin irritation, dryness, colds, scrapes, and more. Most are available at natural grocery stores; the essential oils are easy to find online from reputable brands like Plant Therapy, NOW, and Edens Garden, all of which publish third-party testing data.

Start simple, read the labels carefully (especially age guidance on essential oils), and keep products stored out of reach of young children. When in doubt, your pediatrician is the right call.

Editor’s Note: Originally written by Madeleine Summerville on April 8, 2015, this article was updated in March 2026 to reflect current pediatric safety guidance, including honey/infant botulism warnings and updated essential oil age recommendations.

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