INCI · humectant · CIR review pending · used in 2 products
Sodium PCA
Sodium PCA (Sodium Pyrrolidone Carboxylic Acid) is the sodium salt form of PCA, a compound naturally found in human skin. It is classified as a skin-identical ingredient and functions primarily as a humectant, helping the skin retain moisture. Its CAS number is 28874-51-3 and its chemical/IUPAC name is Sodium 5-Oxo-2-Pyrrolidinecarboxylate. It also has antistatic and hair conditioning properties according to official CosIng data.
Evidence level
moderateEWG score
—Comedogenic
0/5Category
humectant● Benefits
Sodium PCA helps the skin hold onto water, keeping it nicely hydrated. As a skin-identical ingredient, it works in harmony with the skin's natural moisturizing factors. It is also used in hair care for its conditioning properties.
hydratingbarrier-support
● Cautions
