Form of vitamin C that is a potent antioxidant and anti-inflammatory agent (Sources: Bioelectrochemistry and Bioenergetics, May 1999, pages 453–461; and International Journal of Radiation Biology, June 1999, pages 747–755). However, claims that it can eliminate or prevent wrinkles when applied topically are not substantiated in any published studies, though it can improve the appearance of wrinkles, uneven skin tone, and brown spots.