Skin Biology Super GHK Copper Serum VS Asterwood Naturals Copper Skin Biology Super GHK Copper Serum VS Asterwood Naturals Copper 2 weeks in on GHK Cu and the glow is REAL. Brighter complexion More even skin tone Less breakouts Softer fine lines Thicker, fuller hair This is just Active just means the serum contains a functional, lab verified concentration of real GHK Cu copper peptide not just colour or trace copper. Our formula includes 300mg of pure GHK Cu (1% concentration) in NAC Supplement for Glutathione Boost and Liver Support Double Pack