This antioxidant ingredient is a photoprotective substance.  Although it does not work like sunscreen, studies show that it helps to prevent the microscopic signs of acute sun damage, the so-called "sunburn cell."  We also need vitamin C to make new collagen in our skin. 

When topical L-Ascorbic acid is applied to the surface of the skin, 20 times more vitamin C is absorbed than when we take it by mouth.