Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu: My secret weapon for skin, hair, and healing, I use it two ways topical cream for my face, and subQ injections 3x a week., It boosts collagen, tightens skin, helps hair grow, and even Can a patient with a history of liver or kidney disease, such as Wilson's disease or hemochromatosis, overdose on copper from Gly His Lys Copper (GHK Cu)?