STABILIZATION OF PURE VITAMIN C IN AQUEOUS COSMETIC PREPARATIONS

The cosmetic industry associated L-ascorbic acid (LAA) or not with its salts and esters, to be employed for fighting the cutaneous aging process. In large part, in the segment of cosmetics, the salts and esters of the LAA alone are employed more frequently than the pure LAA, since the former are chemically more stable, but result in less effective products. The present work refers to a process for stabilizing LAA in an aqueous medium, which includes the step of placed the LAA in contact with Polyvinylalcohol (PVA) through weak force like Van der Waals interaction. The PVA provides stability for LAA aqueous solution, which is stable for 106 days with a LAA content decrease only of 10% w/v.