Alpha-hydroxy acid (AHA) with the smallest molecular weight in the group. Accelerates desquamation, evens skin tone and texture.
Topical application
AProven efficacy. Two or more independent RCTs with instrumental endpoints.
One of the most extensively studied AHAs. RCTs and systematic reviews confirm efficacy for acne, melasma, photoaging, and keratosis. Professional peels at 20–70% concentrations have extensive clinical evidence.
1–10% in leave-on products; 20–70% peels – professional use only
Irritation potential
MediumAllergen risk
LowPregnancy
SafeFor sensitive skin
Risk of burning and irritation with prolonged contact. Products containing glycolic acid require daily SPF30+ sun protection.
Suitable for
Use with caution
Does not combine with
Glycolic Acid is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
Glycolic Acid suits: normal, combination, oily. Use with caution in: sensitive, dry.
Glycolic Acid has moderate irritation potential. Sensitive skin may show a transient reaction that usually settles with adaptation.
Alpha-hydroxy acid (AHA) with the smallest molecular weight in the group.
The INCI name is Glycolic Acid. It may also appear as: Hydroxyacetic Acid, Гликолевая кислота.
Published: · updated:
Two acid exfoliants at once are excessive. Alternate: AHA one evening, BHA another, to avoid barrier overload.
1–10% in leave-on products; 20–70% peels – professional use only