Magnesuim ascorbyl phosphate is a water-soluble derivative of vitamin C rapidly gaining popularity in skin care. It is nonirritating and more stable than vitamin C. Most importantly, magnesuim ascorbyl phosphate appears to have the same potential as vitamin C to boost skin collagen synthesis but is effective in significantly lower concentrations. Overall, magnesuim ascorbyl phosphate appears to be a better choice than vitamin C for people with sensitive skin and those wishing to avoid any concomitant exfoliating effects.
Skin care products with magnesuim ascorbyl phosphate are available and their number is growing. Be careful though. Many products contain less than effective concentration and fail to boost collagen synthesis. Also, even though magnesuim ascorbyl phosphate is several times more stable than vitamin C, it still gradually degrades when exposed to light and air. Hence freshness and proper storage are important.