Magnesium Ascorbyl Phosphate
MAP, Magnesium L-Ascorbyl-2-phosphate, Ascorbyl phosphate Magnesium
Molecular Weight: 278.39 Cas No:113170-55-1; 114040-31-2
Skin conditioning; Whitening; Antioxidant, can inhibit the activity of tyrosinase. Water-based vitamin C derivatives, with neutral pH and low to moderate stability, can be refrigerated before the product is unopened to slow down the rate of active degradation [2].

Due to the oxidative properties of pure vitamin C, it is not easy to store, so such derivatives have been developed to combine vitamin C with metal salts to maintain better stability, improve safety, and have fewer side effects such as irritation [3].
[1] 行政院衛生署 藥物食品檢驗局資訊網,
[2] 張麗卿,『我就是化妝品化達人』,健行出版社,2007/04/10。
[3] 楊仁宏,『解開「防曬與美白」的迷思(上)』,仁愛醫訊第十六卷第四期 89 年 8 月刊,

Magnesium ascorbyl Phosphate (MAP) stimulates synthesis of collagen and is also and antioxidant.
It is relatively stable derivative of vitamin C. It can survive at room temp in aqueous solution for at least a few weeks. less skin irritation.



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