It’s stable vitamin C derivative (L-Ascorbic acid mono-dihydrogen phosphate magnesium salt) that does not degrade in formulas containing water. Light-stable and oxygen-stable. Quantity : 10 gmPurity >98.0%. May discolor at pH<6. Best when used in emulsion-based products at pH between 5-7.Benefits· Stabilized and degradation resistant form of vitamin C· Potent antioxidant (shown to be able to protect skin from oxidative damages)· Can improve appearance of aged and fragile skin· Widely used as add-on ingredient in skin-lightening products to correct hyperpigmentation and age spots· Antioxidant effect can be increased by combining Magnesium Ascorbyl Phosphate with L-ascorbic acid and/or vitamin EUseAdd at the end of the formulation process just before the preservative, by pre-dissolving in distilled water. Typical use level 0.2-3%, but up to 10% (for skin-lightening effect). For external use only.ApplicationsLotions, creams, suncare & after sun products, makeup products.