Active ingredient
Sodium PCA
INCI · Sodium PCA
Sodium PCA is a humectant that occurs as part of skin's own moisturising factor. It draws and holds water at the surface, helping the skin feel supple and well-hydrated, and slots easily into lightweight, water-based formulas.
Mechanism in detail
What Sodium PCA does
As a humectant it attracts ambient water and binds it within the surface layer, supporting suppleness.