GHK CU, Why this audio? Because injecting feels like a constant wasp sting so it takes me about 15 seconds to pin .2 mL. I dread this shot every night for that reason. Also, it leaves me bruised, so I Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Ghk Cu Intra Nasal Spray 50 mg 0.34 oz. Westend Medical Supply Oral Liposomal Copper GHK Liposomal GHK Cu Supplement The Human Tripeptide GHKCu in Prevention of Oxidative Stress and Degenerative Conditions of Aging: Implications for Cognitive Health Pickart 2012 Oxidative Medicine and Cellular Longevity Wiley Online Library