GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health