STAY-C50 is a white to off-white, odourless powder, consisting of a stabilized (phosphorylated) sodium salt of L-ascorbic acid. Esterification of ascorbic acid at position 2 protects vitamin C from destruction by oxidation. The L-ascorbate molar activity of the phosphorylated ester of vitamin C is equivalent to L-ascorbic acid. For use in skin, hair and oral care cosmetic products and oral pet food applications.