This is where diligent GHK-Cu storage becomes even more critical
American Journal of Gastroenterology, 112(5):775-784 Del Zompo, et al
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Isotretinoin remains in the formulation alongside copper peptide (GHK-Cu), which the company cites for supporting skin repair and improving texture and firmness
Health Affairs Scholar., 2024;2(7):qxae088, doi: 10.1093/haschl/qxae088 [DOI] [PMC free article] [PubMed] [Google Scholar] 785
Once the water is in, do not shake the vial