GHK Cu Peptide Therapy Brea, CA Orange County Copper Peptides for Skin: The Science, Benefits, and Best Practices Hubmed What is GHK Cu and Why is Everyone Talking About It? GHK Cu (Copper Peptide) is a powerful, naturally occurring compound in the body that plays a key role in skin health GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or