Ingredient library
Sodium PCA (a natural moisturising factor)
INCI: Sodium PCA
A component of skin's own natural moisturising factor, added to hold moisture at the lash line and complement glycerin and hyaluronate in the daytime hydration system.
Evidence and limitations
Recognised in cosmetic science as a natural-moisturising-factor humectant; consensus-level evidence, with limited lash-specific study.