exfoliant · humectant · ph-adjuster
Lactic Acid
Watch if sensitive·Strong evidence
A larger, gentler alpha hydroxy acid than glycolic acid, used to exfoliate and to draw in moisture. It can still cause stinging or increased sun sensitivity at higher concentrations, so daytime SPF use is sensible, but it is generally better tolerated than glycolic acid.
Worth knowing
- Can irritate, especially left on
- Restricted in the EU
Regulated similarly to other AHAs under EU rules on free acid content and required sun-sensitivity labeling.
Products with Lactic Acid
References
This dossier covers safety and concern. For what the efficacy evidence says about Lactic Acid, see SerumTruth ↗, our sister site.
Cosmetic information for general education, not medical advice. Concern is graded on cited evidence, never on hazard-score lists. See how we score.