There are many forms of Vitamin C for skin, and while they all have antioxidant benefits, some types work better in skin care formulas than others. The difference between pure vitamin C and vitamin C derivatives is how effective they are when used in topical application. L-Ascorbic Acid is the purest form and the most effectively absorbed form of Vitamin C. In clinical studies, derivatives of ascorbic acids (including magnesium ascorbyl phosphate, ascorbyl-6-palmitate, and dehydroascorbic acid) were not shown as effective when applied topically, as they do not provide the full benefits of the pure form of C.
L-Ascorbic Acid – has the most skin related research of any form of C. The most effective formulas have a pH of less than 4 (between 2.6 and 3.2 is ideal). Those with sensitive skins, or those finding Vitamin C irritating, should look for products with a higher pH level (above 4) – while they will probably be less effective (a lower pH generally indicates a lower concentration in the serum) they will also be less irritating. And, as with many products, not all serums are created equal. Components like the type and concentration, the ingredient list, and even the kind of bottle or dispenser make or break your serum’s benefits — and your skin.
To identify which form, pH level or concentration is best for your skin type or skin condition, speak with our skin specialist.