The peptides we supply for research, including GHK CU Cosmetic 5MG, are lyophilized (freeze-dried) specifically to eliminate water-mediated degradation until reconstitution
The best option depends on your providers recommendation
A bunch of studies from 2012 "confirms the ability of copper peptides to improve aging skin conditions, which make them indispensable in anti-aging and protective cosmetic products." Several research theories suggest that "bioactive peptides hold great potential for cancer therapy and diagnostics." Thereby indicating that peptides are safe for topical use
[DOI] [PubMed] [Google Scholar] 24.Fujita Y., Wideman R.D., Asadi A., Yang G.K., Baker R., Webber T., Zhang T., Wang R., Ao Z., Warnock G.L., et al
Studies are finding that GHK-Cu is especially valuable because of its ability to help your body repair itself
Suggested Use: As a dietary supplement, take one serving (one tablespoon) daily, preferably on an empty stomach prior to cardiovascular activity or a strength training workout