Peptides for Skin & Beauty
Peptides investigated for skin biology, collagen synthesis, and pigmentation — spanning commercial cosmetic ingredients and investigational compounds.
Educational content only. The information on this page is for educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. Always consult a qualified healthcare professional before making decisions about any medication or health intervention. Regulations and product availability vary by country and jurisdiction. Learn about peptide safety & regulation →
GHK-Cu
Glycyl-L-Histidyl-L-Lysine Copper
GHK-Cu is a naturally occurring copper-binding tripeptide researched for collagen synthesis and wound healing. Topical forms appear in many cosmetic products; injectable use is not FDA-approved.
Melanotan II
MT-II
Melanotan II is a non-selective melanocortin receptor agonist studied for skin tanning and sexual function. It has never been approved by the FDA; multiple regulatory agencies have issued safety warnings.
PT-141
Bremelanotide / Vyleesi
PT-141 (bremelanotide / Vyleesi) is an FDA-approved melanocortin agonist for HSDD in premenopausal women. It targets CNS receptors influencing sexual desire rather than vascular pathways.
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