Magnesium Ascorbyl Phosphate (MAP) is a water-soluble vitamin C derivative celebrated for its stability, low irritation, and potent antioxidant properties. As a phosphorylated form of ascorbic acid, it acts as a gentle yet effective precursor to active vitamin C, releasing free ascorbic acid in the skin to support collagen synthesis, brighten tone, and protect against environmental stressors. Backed by dermatological research, MAP is a cornerstone in advanced skincare for combating hyperpigmentation, aging, and oxidative damage, suitable for all skin typesâespecially sensitive or reactive skin.