Stimulating Natural Testosterone Production While Undergoing Testosterone Replacement Therapy Can Be Beneficial GHK Cu Scalp Solution Empower Pharmacy GHK Cu (Copper Peptide) is a naturally occurring copper complex that decreases significantly as we age. This powerful peptide is known for its ability to upregulate the production of collagen and elastin, making Peptide Therapy for Pain Management and Healing Core Medical & Wellness Copper Peptides for Hair Loss: Evidence, Safety, and How to Use Them Bolt Pharmacy Peptides