2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density. Peptide Therapy for Hair Growth: Does It Really Work? IK Clinics GHK Cu 20mg + BAC Water skin and hair renewal Synthagen Synthagen PL GHK Cu for hair growth does it actually work? Short answer: no. GHK Cu can be great for skin but when it comes to hair growth, the evidence just isn't there. And this El GHK Cu (Copper Peptide) for Hair Supports healthier, stronger looking hair Helps nourish the scalp and hair follicles Promotes thicker, fuller appearance Encourages improved