Jin Ho Chung and colleagues tested seven naturally occurring lipids (greasy molecules that play many important biological roles) in their ability to reduce skin aging.
In samples of skin cells, three of the lipids could prevent UV-radiation from both reducing collagen expression and increasing the levels of MMPs; they even increased collagen in undamaged skin cells. Of these three, the molecule phosphatidylserine (PS) seemed the most promising, so the researchers tested it on human skin.
They applied a 2% PS solution to small areas of the buttock in both young and old volunteers; the young skin was subsequently given a dose of UV-radiation to simulate sun damage. In both natural and UV-induced aging, PS treatment prevented collagen reduction and an increase in MMPs when compared to no treatment.
While larger and longer trials are needed to confirm any therapeutic benefits, these initial findings suggest topical PS application might be a simple and natural way to slow down the biological elements underlying wrinkling.
Source: Soyun Cho, Hyeon Ho Kim, Min Jung Lee, Serah Lee, Chang-Seo Park, Sang-June Nam, Jeong-Jun Han, Jin-Wook Kim, and Jin Ho Chung. Phosphatidylserine prevents UV-induced decrease of type I procollagen and increase of MMP-1 in dermal fibroblasts and human skin in vivo. Journal of Lipid Research, 49: 1235-1245 DOI: 10.1194/jlr.M700581-JLR200