Theyre different tools for different situations
[DOI] [PMC free article] [PubMed] [Google Scholar] Cork SC, Richards JE, Holt MK, Gribble FM, Reimann F, Trapp S
MEDICAL EMERGENCY I WITNESSED I had a 41-year-old male patient hospitalized for severe dehydration during his third month on Retatrutide
Both peptides can darken existing moles and freckles, and whether either changes melanoma risk is still unclear in the research (Melanotan II, Wikipedia)
Start slowly, use an appropriate concentration, choose a delivery vehicle that works with your skin barrier rather than against it, and be thoughtful about how you layer GHK-Cu with pH-sensitive actives like vitamin C and cell-turnover accelerators like retinol