Vitamin C has been known and proven as one of the most effective ingredients in collagen synthesis, skin rejuvenation and clarity. L-ascorbic acid is the free form of vitamin C that breaks down after 3 weeks in solution. Our Vitamin C is derived from the most stable donor of L-ascorbic acid called "Magnesium ascorbyl phosphate". This form of Vitamin C is stable even at high temperatures and remains potent for up to 3 years in solution. Moreover, all Laser Sculpture products are compounded at the time of order to guarantee freshness, potency, effectiveness and quality. You will be sure your vitamin C delivers instant results.