GHK Cu 100mg Peptide King Most people hear about GHK CU in beauty circles. Skin. Hair. Collagen., What they do not tell you is that this peptide is one of the most versatile in the space. I use it primarily for recovery and Amazon.com: Neurogan GHK Cu Copper Peptide Hair & Scalp Serum 2400mg, 4% Copper Peptides Fast Absorbing, Water Based Formula for Hair Softness & Shine Cosmetic Dry Scalp Moisturizer Spray, Made in USA : GHK Cu Copper Peptide Hair Growth Serum Blackbird Skincare: Custom Skincare & Beauty Manufacturer Tailored Solutions for Every Brand Try this hair oil copper GHK cu peptide oil! https: affixhairextensions.com collections hair growth serum