The Mica in Your Highlighter: A Supply Chain Story

Tilt a highlighter in the light and watch it catch, that soft glow across a cheekbone. That shimmer has a name. It is mica, a mineral prised from the earth in flakes so fine they scatter light like crushed stars. It is in your bronzer, your eyeshadow, your car paint, and quite possibly the wall behind you. And I have spent enough time close to its supply chains to know the glow rarely tells the whole story.

Mica is beautiful. Its journey to your make-up bag is often not.

Let me be honest about why this one sits close to me. I have walked the parts of a supply chain that brands would rather you never picture. I have seen how far a raw material travels, and how many hands it passes through, before it becomes something sold as clean, natural, or pure. Mica is a textbook case. A large share of the world’s supply comes from regions where mining is informal, poorly regulated, and tangled up with poverty. Which means it is tangled up with child labour too, because when families are desperate, small hands fit into small spaces.

That is the uncomfortable middle of the story. Here is why I am telling it to you as a communications person and not just a concerned human.

The industry’s response to the problem

For years the industry response was silence. Then it became a certain kind of noise. Brands discovered the phrase “ethically sourced mica” and stitched it onto packaging like a badge. Some meant it. Some had done the deep, unglamorous work of mapping their suppliers, funding schools, and paying for third-party verification. Others had simply found a sentence that tested well in a focus group. From the outside, the two looked identical. That is the problem we keep coming back to at Madhatter Creative Co.

Here is the thing I want you to sit with. Transparency about mica is not a marketing strategy. It is the floor. Knowing where your mica comes from, who dug it, and whether a child should have been in school that day is not a premium feature reserved for the luxury tier. It is the baseline cost of selling a shimmer in good conscience.

What does honest communication look like?

So what does honest mica communication actually look like? Not perfection. Progress you can prove.

The brands doing this well tend to share three things. First, they name the difficulty out loud, because pretending mica is simple is its own kind of dishonesty. Second, they show their working. Which regions, which verification schemes, which years, and crucially, where they are not yet where they want to be. A brand that admits it can trace only 70 per cent of its mica today, and tells you the plan for the other 30, earns more trust than one waving an unqualified “ethical” flag. Third, they talk about people, not just policies. Membership of an industry initiative is a start, but it is a logo, not a life. Tell me what changed for the families at the other end.

Advice for brands and founders

If you are a founder reading this and feeling your stomach drop, take a breath. The goal is not a spotless chain before you are allowed to speak. Very few have one. The goal is to communicate the truth of where you are clearly enough that a customer could make an informed choice. That is a far kinder standard, and a far more durable one, because it does not collapse the moment a journalist starts asking questions.

There is also a synthetic route worth mentioning, a lab-grown mica that sidesteps the mining question entirely. It is not a silver bullet, and it carries its own trade-offs, but I raise it because good communication means presenting the honest options rather than the flattering ones.

The shimmer will always sell. That is not the issue. The issue is whether the story behind the shimmer can survive daylight. So next time you draft a line about your natural, mineral-rich, ethically sourced glow, pause and ask a plain question. Could I say this out loud to the person who mined it? If the answer is yes, you are on solid ground. If it makes you flinch, you already know what to do next, and we are always happy to help you find the words.