Glycolic Acid Percentage Where a Peel Stays Cosmetic

A skincare maker messaged us wanting to launch a "10% glycolic peel" as a weekend at-home treatment. The product idea was fine. The word "peel" combined with that concentration and how she planned to describe the pH was where things got complicated, and it's worth walking through why, because this is one of the more common lines makers cross without realizing it.

It's concentration and pH together, not concentration alone

Glycolic acid's effect on skin depends on both how much is in the formula and how acidic the overall product is. A 10% glycolic product buffered to a moderate pH behaves very differently on skin than the same 10% at a very low pH. Regulators and industry guidance in various markets have generally treated higher concentrations combined with lower pH as pushing a product toward professional or medical-use territory, since that combination is what produces a deeper, more aggressive exfoliation rather than gentle at-home resurfacing.

This is why you'll see consumer AHA products cluster at lower concentrations with moderate pH, while genuinely professional peel formulations used by estheticians or dermatologists sit at meaningfully higher concentrations, often with lower pH, and are applied under supervision with neutralization steps built into the treatment.

Why "cosmetic" status depends on this line

A cosmetic claim is about routine, low-risk use: gentle exfoliation, smoother texture, improved tone, that kind of language. Once a product's formulation or its marketing suggests a medical-grade or professional-strength effect (removing acne scarring, resurfacing skin, treating a diagnosed skin condition), you've likely stepped outside what a cosmetic claim covers. In most markets, sunscreen, anti-acne, and similar drug-type claims already sit outside cosmetics regulation, and an aggressively marketed "peel" claim risks landing in that same territory even if the ingredient itself, glycolic acid, is common in ordinary cosmetics.

The safest read is this: keep your concentration and pH combination in the range associated with gentle, at-home, non-medical use, and keep your claims matched to that, exfoliating, smoothing, radiance-boosting, rather than language that implies a clinical-strength peel or a treatment for a skin condition.

The word "peel" itself is a marketing risk, separate from the chemistry

Even a genuinely mild formula can create a compliance headache if you call it a "peel" on the label or in ads, because that word carries an expectation of intensity that regulators and consumers alike will read as more than ordinary cosmetic use. If your formula is squarely in gentle at-home territory, consider softer language, "resurfacing treatment," "exfoliating solution," "smoothing serum," and save "peel" for something you've confirmed sits clearly within cosmetic bounds, or drop it entirely.

What to actually check before you launch

1. Your exact concentration and your finished product's actual measured pH, not a target pH you intended but never verified with a meter.
2. How your specific market treats AHA concentration and pH combinations. This varies by country and is exactly the kind of detail that changes, so confirm current guidance with your target market's regulator or a knowledgeable formulator rather than relying on a rule of thumb from a different market.
3. Your label and marketing language, checked against your actual formula, not against what a competitor's similar-sounding product claims.
4. Whether your intended use directions, leave-on time, frequency, any recommendation to avoid sun exposure afterward, match a cosmetic use pattern rather than a professional treatment protocol.

A practical way to de-risk this

If you're not sure where your formula sits, err toward a lower concentration and a more moderate pH for your first at-home version, and market it with cosmetic-appropriate language. You can always test consumer response and consider a higher-strength line later, with proper guidance, rather than launching at the edge of the line and finding out the hard way that you crossed it.

Once you've settled on a formula you're confident is squarely cosmetic, getting the actual ingredient list right, INCI names, CAS numbers, and concentrations, is the next step, and it's the part Cosmetic Comply is built to handle, matching your ingredients and screening them against a market's restricted lists before a human reviewer confirms everything and the notification goes out.