7 days on GHK Cu. Here's my honest update. I'm not going to hype this up because the real results don't even start until week 46. But something is already happening. Hair Growth Serum Intense with Copper Peptide GHK Cu Mayraki NOLUVA Copper Peptide Hair Regrowth Serum GHK Cu & AHK Cu 30ml British Harmonia Natural Makeup & Fragrance by British Harmonia UK HOEGOA Copper Peptide Hair Growth Serum With GHK CU AHK CU Powerful Hair Growth Treatment Stimulates Follicles Reduces Thinning Thickens Hair Improves Scalp Health for Fuller Stronger Hair Over Time 30ml Best Price GHK Cu (Copper Peptide) LeadWest Medical Shed Copper Peptide Hair Growth Serum Take an Rx approach to hair health