Is topical GlycylLhistidylLlysine copper (GHKCu) safe for adults, and what are the risks, contraindications, and considerations for systemic use, pregnancy, lactation, and children? And we're back with our GHK Cu peptide injection pen. Here's how to use it, and where. More coming soon ;) #ghkcu #ghkcucopperpeptide #peptides GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu Glow Peptide Stack for Skin Rejuvenation Jennifer R. Berman MD