Vitamin C is used topically to treat and prevent changes associated with photo-aging and treat hyperpigmentation.
For hyperpigmentation, vitamin C interacts with copper ions at the tyrosinase-active sites and inhibits the action of the enzyme called tyrosinase. This enzyme is responsible for the conversion of tyrosine to melanin (pigment). Because it inhibits this action, it acts as an effective whitener/brightener.
It is also known that Vitamin C is a primary replenisher of Vitamin E. Vitamin E is a lipophilic antioxidant and has a primary role in protecting cell membranes against oxidative stress and maintaining the collagen networks in the skin.
Vitamin C and vitamin E levels can be rapidly depleted with UV exposure. Therefore, finding stable compounds of Vitamin C with efficacious delivery methods into the skin is something constantly being explored as Vitamin C.
Magnesium Ascorbyl Phosphate (MAP)
Magnesium ascorbyl phosphate is a salt of ascorbic acid (vitamin C) that is water soluble and fairly stable and less easily oxidized compared to other forms of vitamin C. It is an antioxidant that stimulates collagen production and is known for its melanin inhibiting properties — whitening and brightening. As an antioxidant, it is a free radical scavenger making it an effective anti-aging ingredient. Because it also stimulates collagen production, it helps with skin elasticity.
Products Containing MAP
- Youth to the People Superfood Firm and Brighten Vitamin C Serum ($62.00 for 1 oz)
- The Ordinary Magnesium Ascorbyl Phosphate 10% ($9.60 for 1 oz)