For a researcher, the value here is context about supply, not a checkout button you can press
Lyophilised GHK-Cu powder remains stable at 20C for 1824 months, but once reconstituted with bacteriostatic water, refrigeration and use within 2835 days is required to preserve peptide activity
K., Dukle, A., & Nathanael, A
This underscores why GHK-Cu research protocols consistently emphasize working at carefully controlled, low, non-toxic concentrations rather than assuming "more is better." Regulatory Status As of the most recent literature reviews, GHK-Cu remains classified primarily as a cosmetic ingredient rather than an FDA-approved drug
Biophysical characterization of the interaction of human albumin with an anionic porphyrin