Copper Peptide Barrier Cream Yunasence GHK Cu with Ceramides YUNASENCE Copper Peptide Barrier Cream Yunasence GHK Cu with Ceramides YUNASENCE GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health 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 Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum