What it does
The effect depends not only on the percentage but also on pH and the amount of free acid.
Exfoliants
Glycolic acid.
A small-molecule AHA used for surface renewal, radiance and texture.
- INCI name
- Glycolic Acid
- Function
- An alpha-hydroxy acid exfoliant and pH regulator.
- Information level
- Established evidence
- Last reviewed
- 22 September 2026
Who may benefit
Skin that is not particularly reactive, with gradual introduction.
Compatibility
Moisturisers and barrier-supporting ingredients; initially alternate with retinoids.
Precautions
May cause irritation and increase sensitivity. Avoid accumulating exfoliants and use SPF.
How to use it
Preferably in the evening, at the product's recommended frequency.
Concentrations
The percentage cannot be inferred from INCI order. WAI LAB shows it only when stated by a verifiable source.
HOW TO READ IT
What it means in the INCI list?
In the European Union, ingredients above 1% are listed in descending order by weight; below 1%, they may appear in any order. Their position therefore cannot be used to calculate an exact percentage.
Its position helps you understand the formula, but does not on its own establish effectiveness or an exact percentage.
SOURCES
Where the information comes from.
WAI LAB distinguishes cosmetic function, regulatory context and scientific literature. This information is not a substitute for medical advice.
FROM UNDERSTANDING TO CHOOSING
Products with Glycolic acid.
46 catalogue products list a recognised form of this ingredient in their INCI.
46 resultsVerified profiles with declared concentrations appear first.
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Verified24 of 46 shown