Patent AT-E399803-T1: [Translated] POLYMER WHICH RELEASES EVEN AN AMINO ACID DERIVATIVE, COSMETIC AND FIBER CONSTRUCT WITH THE POLYMER, PRODUCTION PROCESS THEREOF AND REGENERATION PROCESS THEREOF

The object of the present invention is to provide a polymer which achieves an ef fect of supplementing the water-retaining function of horny layer and keeping the normal skin by a gradual supplying of an amino acid derivative to the skin through moisture containing electrolyte salt such as sweat perspired from human body and to provide a cosmetic and a fiber structure containing said polymer. According to the present invention, there is provided sustained-release polymer for amino acid derivative, characterized in that , a polymer containing acidic group is ionically bonded to an amino acid derivative. Cosmetic and fiber structure containing the same are also provided.