Effect of Oral Administration of Defatted Chicken Skin Powder on Dry Skin in Humans

We investigated the effects of defatted-dried chicken skin powder (DOS) containing sphingomyelin (SM) on human facial skin conditions. A placebo-controlled, double-blind 12-week study of DCS (1 g/day; SM2 mg/day) was conducted on 36 female volunteers who tend to have dry skin. In the DOS group, the moisture of the stratum corneum of cheek tended to increase after 12 weeks. In the subjects whose moisture of cheek was less than 35 arbitrary unit, the DOS group was significantly higher than the placebo group. After 12 weeks, skin elasticity showed significantly increase in the DOS group compared with 0w. These results indicate that the ingestion of DOS improves dry facial skin.