Sodium PCA
PCASodium Pyrrolidone Carboxylate
Humectant
Sodium PCA is like a tiny sponge that helps your skin and hair grab onto water from the air. This keeps your hair and skin feeling soft and moisturized, preventing them from drying out.
Low Concern
Source: Cosmetic Ingredient Review (CIR)
It is naturally found in human skin and is generally recognized as safe for use in cosmetics.
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Last updated: May 16, 2026