GHK Cu Copper Peptide Face Tonic (30 mL) Reduces Appearance of Fine Lines Supports Skin Firmness GHK CU Cream Your skin knows GHK Cu. Your body makes it naturally, then makes less of it with age. We concentrated it. Three formulas. One peptide. Each paired with a single bioactive, chosen for a Biossance Squalane + Copper Peptide Rapid Plumping Serum Copper Peptide Skincare Routine: How to Layer Peptides Glimmer Goddess GHK Cu Face Serum 1200MG Copper Peptide Tablets