Abstract: Mycosporine-like amino acids (MAAs) is a kind of water soluble amino acid with strong UV absorption ability.In order to study the moistureabsorption,moisture-retention effects of the MAAs from Gloiopeltis furcata, the MAAs from G.furcata, glycerinum and hyaluronic acid were tested in vitro environment to measure their moisture-absorption and moisture-retention properties.The moisture-retention and absorption photometry of skin lotion and skin emulsion contained various concentration of MAAs from G.furcata were also studied.The results indicated that the general moisture-absorption and moisture-retention effects of MAAs from G.furcata were better than hyaluronic acid,but slightly lower than glycerinum.The MAAs from G.furcata showed higher moisture retention efficiency than glycerinum and hyaluronic acid after 72 hours testing,it can retain water for a long time.The human skin testing indicated the skin lotion contained 60% MAAs concentrated solution showed the best moisture-retention efficiency,the skin hydration has been improved 23.29 C.U.Compared to blank control area after testing for 3 hour,the skin emulsion contained 5% to 20% MAAs concentrated solution can significantly improved their absorbance value,the higher addition of MAAs concentrated solution,the higher absorbance value of skin emulsion.

Key words: Gloiopeltis furcata, moisture-absorption, moisture-retention, absorbance value