Info ANTIOX-C? Magnesium Ascorbyl Phosphate (MAP) HIGH ALTITUDE ESSENTIALS? ANTIOX-C? Magnesium Ascorbyl Phosphate (MAP) powder is a water-soluble, generally non-irritating, stable derivative of Vitamin C and is a potent skin antioxidant. When used topically, MAP has the same potential as vitamin C to support skin's collagen and elastin, resulting in firmer, smoother and more youthful skin appearance, with diminished appearance of wrinkles, fine lines, and blemishes; yet MAP is effective in significantly lower concentrations. Benefits ANTIOX-C? Magnesium Ascorbyl Phosphate (MAP) Uses and Benefits for Skin Magnesium Ascorbyl Phosphate is a potent anti-oxidant that can protect skin and skin care products from oxidation, as well as helps fight pollutants on skin, thus improving the appearance of aging and damaged skin and restoring natural glow and attractiveness. Specs Warnings: Magnesium Ascorbyl Phosphate (MAP) is generally considered more gentle than traditional Vitamin C and therefore is milder on sensitive skin. However, those with sensitive skin may need to be aware of Vitamin C?s acidic and exfoliating effects. Specification: 99-100% Suggested usage: 3 to 5% as skin anti-oxidant and anti-ageing; up to 10% for evening out skin tone. Appearance: White-yellowish powder, mild odor; Solubility: Water. Stability and Suggested pH: may discolor in pH 6, best when used in emulsion based products at pH between 5.5-7. pH value: 7.0-8.5. Storage: Store in cool, and dry place. Keep away from direct strong light and heat. Shelf Life: 12 months from the date of purchase.