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 GHK Cu Hair Growth Copper Peptide Serum Benefits: Complete Guide to GHK Cu Glimmer Goddess Copper peptide questions we get asked all the time How often should you use it? Do you need to avoid the sun? If you're new, start once daily (evenings are great), 7% GHK CU ACCELERANT