GHK CU for Sale Tripeptide 1 3rd Party Tested US Made Juvasonic + Vitali Copper Peptide (GHK Cu) Bundle Amazon.com: Neurogan GHK Cu (Copper Peptide) Neck & Face Serum 1,200mcg (1 oz bottle) : Beauty & Personal Care GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care Professor Dr Patrick Treacy has cautioned against the current hype surrounding peptides, emphasizing that aesthetic medicine must remain grounded in solid clinical evidence rather than marketing