"Clean" is the most overused, least defined word in haircare. This page is us defining what we believe "clean" should mean.

Right now, the term "clean" in haircare and beauty means whatever a brand wants it to mean. Sephora has "Clean at Sephora." EWG has its "Skin Deep" ratings. Apps like Yuka and Think Dirty assign their own scores. None of them agree on what clean actually means.

These labels aren't just incomplete. They're often misleading. They let unclean products pass as clean, while families assume someone is actually checking the formulas. We've gotten tired of watching it happen.

Before we get into what clean should actually mean, here's what it doesn't mean.

1. Clean is more than what's left out.

A formula isn't clean just because it avoids the obvious villains.

Most clean brands sell you on what they don't use. Parabens. Sulfates. Phthalates. Skipping a few bad ingredients doesn't make the rest of the formula clean.

2. Clean is not clean-looking packaging.

Brands have figured out that packaging that LOOKS clean sells products. Soft colors. Simple labels. The aesthetic signals "clean" before you've read a single ingredient.

They use that look to imply something the formula doesn't deliver. The bottle does the work the formula won't.

3. Clean is not a badge or a buzzword.

Badges and buzzwords are shortcuts. They promise clean without proving it.

"Natural-derived." "Plant-based." "Non-toxic." "Clinically tested." "Dermatologist approved." These survive because they can't be fact-checked. "Clinically tested" has no required standard. It can mean almost anything.

None of them actually educate. They check a box and hope you trust them.

4. Clean is not "all natural."

Natural ingredients are great. "All natural" as a marketing claim is something else.

There's no regulated definition for "all natural," so brands can claim it without proving anything. And 100% natural formulas often have lower efficacy than ones built with a small amount of carefully chosen synthetics. Some natural ingredients can also be potent enough to cause irritation at high concentrations.

Natural doesn't always mean safer.

1. The fewer ingredients, the better.

The cleanest formulas use fewer ingredients. Every additional ingredient is another variable, another possible interaction, another chance for irritation, especially in a leave-on product.

A clean formula doesn't pad its ingredient list with botanical extracts that look impressive but don't actually do anything. Every ingredient has to earn its place.

2. No bandaid ingredients.

If an ingredient solves one problem but quietly creates another, it doesn't belong in a clean formula.

Take silicones. They don't fix your hair. They mask it. A coating over each strand makes hair look smooth. But it blocks moisture and builds up over time. To wash them out you need clarifying shampoo with sulfates, which dry out your hair. So you reach for more conditioner. Which probably contains more silicones.

A clean formula doesn't kick off a negative feedback loop.

3. Safe AND effective.

Safe AND effective is the hardest balance in haircare formulation. Getting both right requires time, expensive ingredients, and real-world testing. The temptation is to compromise on one to maximize the other.

Clean formulas don't.

4. No mystery fragrance.

Fragrance is the sneakiest part of an ingredient label. Brands aren't required to disclose what's in it. So you end up with one word on the label that can hide dozens or hundreds of individual ingredients you never get to see.

And because fragrances are usually bought pre-made from suppliers, even the brand selling the product often doesn't know what's actually in it.

Clean means knowing every ingredient. Including the fragrance.

5. Every choice is defendable.

A clean formula means every ingredient is explainable. What it does. Why it's there. Why it's safe. Anything less isn't clean.

No "proprietary blends." No "trade secret" workarounds. No hiding what's in the formula.

A standard is only as real as the practices behind it. Here's what The MAEN Standard looks like in our day-to-day: