Magnesium Ascorbyl Phosphate,Magnesium L-Ascorbic Acid-2-Phosphate,a magnesium salt form of Vitamin C,water-soluble.It is used in skincare products for protecting the skin from free radicals,stimulating collagen production,reducing hyperpigmentation,and maintaining skin hydration.Magnesium Ascorbyl Phosphate has a neutral or skin neutral pH which makes it easy to formulate with and reduces the likelyhood of sensitivity and irritation.