ghk-cu experience Neurogan Revitalizing Neck & Face Serum | Deep Hydration & Premium Quality | Active Copper Peptide Cruelty-Free 1200 MG 1oz GHK-Cu
Description
And for anyone comparing suppliers, the copper content question should sit at the top of the evaluation checklist because without chelated copper, GHK is simply a tripeptide with a fraction of the documented activity

Morphine promotes rapid, arrestin-dependent endocytosis of mu-opioid receptors in striatal neurons

The peptide retains whatever potency it had when you returned it to the fridge

Different manufacturing
Katsi V, et al

Gil-Puig C, Seoane S, Blanco M, Macia M, Garcia-Caballero T, Segura C, Perez-Fernandez R