Antioxidants from grape seeds protect hair against reactive oxygen species
نویسندگان
چکیده
Oxygen based radicals are predominantly generated in the water phase. Therefore, it is very important to use not only lipophilic antioxidants but also water-soluble radical scavengers in cosmetic formulations. Vitamin C, glutathion and different enzymes are natural water-soluble antioxidants. Unfortunately, most of them are not stable in cosmetic formulations. We studied a new water-soluble antioxidant based on procyanidins isolated from grape seeds. These procyanidins together with tocopherols form a very powerful antioxidant-complex which is stable in water. The activity of this antioxidant-complex was investigated by a novel method whereby the toxicity of UVA irradiated lipids is measured in a cell culture assay. The test results confirm that the combination of water-soluble and oil-soluble antioxidants performs extremely well.
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