Nonapeptide-1 Description: Nonapeptide-1, also called Melanostatine 5, is a propriety peptide that was originally developed for its antimicrobial activities. Animal research has revealed, however, that nonapeptide-1 can inhibit the synthesis of melanin, which makes it of interest for treating certain skin conditions. Animal models suggest that nonapeptide-1 can reduce synthesis of melanin and help decrease skin pigmentation to a substantial …