Cutaneous benefits of vitamin C include promoting collagen synthesis, photoprotection from UVA & UVB, lightening hyperpigmentation, and improvement of a variety of inflammatory dermatoses.
A recent study performed by researchers at the University of Leicester and Institute for Molecular and Cellular Biology in Portugal suggested that Vitamin C stimulates fibroblasts, the cells responsible for skin generation.
There are studies suggesting that Vitamin C administered orally or topically may be effective in sustaining the firmness and clearness of skin. Topical Vitamin C can help reinforce the skin’s protective barrier against free radicals. When selecting a topical Vitamin C, it needs to be stable and active in order to penetrate the skin’s layers, and you will need to be selective when choosing from the wide range of cosmetic utilising Vitamin C.
In order for it to penetrate the skin, a low pH (acidic environment) and high (>10-15%) concentration of Vitamin C are needed before it is effective.
I am currently using Obagi’s Professional C serum, review coming up soon.