Lactic Acid
💚Good
Exfoliant
Moisturizer/Humectant
pH Adjuster
AHA
What it is
An alpha hydroxy acid (AHA) derived from milk. It is known for being a gentler exfoliant than glycolic acid and also has hydrating properties.
How it works
Like other AHAs, it exfoliates by dissolving the bonds between dead skin cells. Due to its larger molecular size, it penetrates less deeply than glycolic acid, resulting in gentler exfoliation. It also functions as a humectant, helping the skin to retain moisture.
Pairs well with
Hyaluronic Acid, Other AHAs
Formulation notes
Effective concentration: 5% - 12%
pH range: Most effective at a pH between 3.0 and 4.0.
Stability: Stable.
Safety
Irritancy: Low to moderate.
Comedogenicity: 0
Warnings: Increases sun sensitivity; daily use of sunscreen is essential.
Ratings
Paula's Choice: Best
INCIdecoder: superstar