Magnesium ascorbyl phosphate (MAP) is a form of Vitamin C.
In skin care products, Magnesium Ascorbyl Phosphate (MAP) is also used for UV protection and repair, collagen production, skin lightening and brightening, and as an anti-inflammatory. It is also a potent antioxidant. It is considered an excellent non-irritating skin whitening agent that inhibits skin cells to produce melanin and lightens age spots, and is a great alternative to Quinone. Magnesium Ascorbyl Phosphate is a also a potent anti-oxidant that can protect skin from oxidation and UV rays, and is used as an anti-inflammatory (source).
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 E.
There are no adverse side effects to using Magnesium Ascorbyl Phosphate (MAP), although those with sensitive skin may need to be aware of Vitamin C’s acidic and exfoliating effects. However, Magnesium Ascorbyl Phosphate (MAP) is generally considered more gentle than traditional Vitamin C and therefore safer on sensitive skin
No interactions are known. Please consult your pharmacist.
Source: TruthinAging, https://www.truthinaging.com/ingredients/magnesium-ascorbyl-phosphate