Skin, Hair & Anti-Aging
Peptides commonly studied for skin remodeling, wound repair, pigmentation, and cosmetic outcomes.
Topical and cosmetic peptide formulations are regulated very differently from injectable peptides.
GHK-Cu
Limited Human EvidenceA naturally occurring copper-binding tripeptide widely used in cosmetics and studied for skin remodeling and wound healing.
Epitalon
ExperimentalA four-amino-acid peptide studied primarily in Russian and Eastern European research for longevity, sleep, and antioxidant effects.
Melanotan II
Limited Human EvidenceA cyclic melanocortin receptor agonist that increases skin pigmentation; precursor research peptide that led to bremelanotide.
Thymosin Alpha-1
Moderate Human EvidenceA 28-amino-acid immunomodulatory peptide approved in many countries (as Zadaxin) for hepatitis B and as an adjunct in cancer and infection.
LL-37
Limited Human EvidenceA human cathelicidin antimicrobial peptide central to skin and respiratory innate immunity.
KPV
Animal / LabThe C-terminal tripeptide of α-MSH studied for anti-inflammatory effects in gut and skin disease.
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