GHK Cu is a naturally occurring copper peptide that has been widely researched for its regenerative and restorative properties. It functions by binding to copper ions and delivering them into cells, Copper Peptide Hair Growth Treatment Serum, GHK Cu and AHK Cu, Licorice Extract,1oz Haircare Comfort TikTok Shop Cellular Glow Hair Serum 10% GHK Cu + 5% AHK Cu Peptides 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 the beginning. Consistency is