Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density. Hair Growth Serum Intense with Copper Peptide GHK Cu GHK Cu (copper peptide)based shampoo & conditioner Started: December 8, 2025 Follow up photo: January 8, 2026 Measured under the same conditions using a tape measure, this shows approximately ~1 inch of length change Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum