Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3 Dr. Brenner Labs Copper Peptide Barrier Cream Yunasence GHK Cu with Ceramides YUNASENCE Copper uglies = temporary. When you start GHK Cu, you can get a spike in free copper breakouts, texture, irritation. It's not the peptide failing. It's your body adjusting. Happens fast Biostetix Not everything that stimulates collagen is automatically beneficial in excess. GHK Cu is a powerful regenerative peptide but like many Instagram