Selected Biomarkers Revealed Potential Skin Toxicity Caused by Certain Copper Compounds Scientific Reports 6 month GHK CU check in Main takeaway: skin transformation takes time. GHK CU peptide binds to copper and activates genes involved in wound healing, collagen synthesis, and skin remodeling. On the face, this translates Is topical GlycylLhistidylLlysine copper (GHKCu) safe for adults, and what are the risks, contraindications, and considerations for systemic use, pregnancy, lactation, and children? The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK Cu Peptides for Skin & Hair Health Desert Mobile Medical Desert Mobile Medical, PLC