Sodium Pyrrolidone Carboxylic Acid (Sodium PCA) is the sodium salt of pyroglutamic acid, an amino acid found in only a few proteins. It occurs naturally in human skin acts to bind water to the cells. It's ability to absorb several times its own weight in water makes it an excellent humectant.
Sodium PCA also enhances with the skin penetration ability of products and can reduce static electricity when used in hair care products.
This product is intended for external use only.