Cosmetic Peptides

Glycyl-L-histidyl-L-lysine Copper

GHK-Cu is a naturally occurring copper-binding tripeptide present in human plasma, saliva, and urine. It has been researched extensively for wound healing, collagen and glycosaminoglycan synthesis, stem cell proliferation, and hair follicle activation. Research dosing is typically 100–300mcg daily either subcutaneously or topically in 8–12 week cycles. Because GHK chelates copper, researchers monitor serum copper, ceruloplasmin, and ferritin to catch any dysregulation — and often track skin biopsy or imaging markers for dermatology research.

MT-2

Melanotan II is a synthetic analog of alpha-melanocyte-stimulating hormone (α-MSH) that stimulates melanin production, causing skin darkening. It was originally developed at the University of Arizona for preventing skin cancer via increased tanning, but was never FDA-approved.

Follicle Stimulating Peptide

PE-22-28 is a synthetic peptide fragment derived from proenkephalin that has shown promising results for promoting hair growth. It is studied for its ability to stimulate the dermal papilla cells and extend the anagen (growth) phase of the hair cycle.

AHK Copper Peptide

AHK-Cu is a copper-binding tripeptide (Ala-His-Lys-Cu) structurally related to GHK-Cu, studied in dermatological research for its role in extracellular matrix remodeling and hair follicle signaling.

Afamelanotide

Melanotan I (Afamelanotide) is a synthetic analog of alpha-MSH that selectively activates MC1R. FDA-approved as Scenesse for erythropoietic protoporphyria (EPP), it is distinct from Melanotan II and is studied for melanogenesis and photoprotection.