Peptides in Cosmetics: Types, Characteristics, and Application Insights, PART 2
Signal Peptides These peptides are added to cosmetic products because they can stimulate fibroblasts (cells responsible for skin function and repair) to produce more collagen, elastin, and other proteins in the dermal matrix. Elevating the levels of these structural proteins makes the skin more elastic and firm. An example of a signaling peptide is GHK—it