Oligopeptide-54, also known under the trade name CG-Nokkin, is a synthetic peptide that acts as a blocker of the BMP receptor, which includes the synthesis of DKK-1, a key molecule in androgenetic alopecia. This peptide is recognized for its ability to promote hair growth and prevent hair loss. It also enhances the production of melanin in hair follicles, which helps prevent hair depigmentation and greying. It consists of 12 amino acids, including asparagine, aspartic acid, glutamic acid, leucine, lysine, tyrosine and valine. Oligopeptide-54 is a valuable ingredient in hair care products aimed at improving hair growth and health.