Lactic Acid
AHA with dual action: acid exfoliation and moisturization via hygroscopicity. Gentler than glycolic acid.
Evidence by route
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
Clinical studies demonstrate efficacy for xerosis, keratosis, and hyperpigmentation. Less potent than glycolic acid for exfoliation but better tolerated. Use in melasma is supported by randomized trials.
- Oresajo C et al. J Drugs Dermatol. 2010;9(5):543-548.
Working concentrations
2–12%
Tolerability and safety
Irritation potential
MediumAllergen risk
LowPregnancy
CautionSkin types
Suitable for
Use with caution
Frequently asked questions
Is Lactic Acid safe during pregnancy?
Lactic Acid should be used with caution during pregnancy. Consulting a dermatologist or OB-GYN is advisable.
What skin types is Lactic Acid for?
Lactic Acid suits: normal, dry, combination. Use with caution in: sensitive.
Can Lactic Acid irritate the skin?
Lactic Acid has moderate irritation potential. Sensitive skin may show a transient reaction that usually settles with adaptation.