*Among other vitamins tested in topical form for anti-photoaging efficacy, vitamin C plays a critical role in collagen and elastin synthesis and also acts as an antioxidant in the skin, modulating the effects of UV-induced reactive oxygen species damage. The JAAD review article describes a clinical trial with 19 subjects comparing daily L-ascorbic acid treatment on one side of the face to vehicle treatment on the other side for three months. Using fine wrinkling, tactile roughness, visual dryness, telangiectasia, laxity/tone, pigmentation, and keratoses as the criteria, investigators and the subjects themselves noted improvement on the treatment half of the face in 16 of the 19 subjects.
*Tretinoin, tea, and tomato paste - Dermatology World//February 2011
My personal favorite is SkinCeuticals vitamin C formulations!
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