For example, L-ascorbic acid, a form of vitamin C found in many skin care products, degrades when it is exposed to heat, a high pH or sunlight, which can happen during transit and storage.
What does a vitamin C serum do? 'Vitamin C is a staple for so many skin concerns,' explains facialist Abigail James. 'It's an antioxidant, which means it can protect against free radical damage ...
What is vitamin C and how is it used in skin care? Dr. Frieling stresses the importance of vitamin C’s powerful antioxidant properties and tells us that “one of its main benefits is its ...