The GHK-Cu 1% Serum is a topical formulation designed for transdermal application in cutaneous research. The lyophilised vial contains the compound in powder form for reconstitution and injectable use. Both are the same compound — the difference is the research delivery route and concentration format.

Melanotan 2 is a shorter, more potent cyclic analogue of alpha-MSH that binds to a broader range of melanocortin receptors (MC1R through MC5R) versus Melanotan 1, which is more selective for MC1R. MT2 has a higher receptor affinity and longer-studied research profile for pigmentation biology.

All compounds are independently HPLC-tested to ≥99% purity. Batch-specific Certificates of Analysis are publicly available on our COA page for every production run.

Lyophilised compounds (Melanotan 2, GHK-Cu vial) should be stored at 2–8°C short-term or −20°C long-term, kept sealed away from light and moisture. The GHK-Cu 1% serum should be stored refrigerated once opened. Avoid freeze-thaw cycles once reconstituted.

Yes — the Tan & Glow Stack (Melanotan 2 + GLOW bundle) and the Skin Renewal Stack (GHK-Cu Serum + BPC-157) are available in our Stacks & Bundles section at reduced bundle pricing versus individual purchase.