Ingredients to Avoid When Using Copper Peptideshttps://www.giantrawsource.com/peptides/peptides-powder-ghk-cu.html
To maintain the integrity of GHK-Cu, it's best to avoid layering copper peptides with: High-strength AHAs or BHAs. Strong Vitamin C (ascorbic acid or ethyl ascorbic acid) Retinoids or retinol derivatives.
