If you're using GHK Cu and it stings a little (which is common) this one's for you In this reel I'm sharing the small tweaks that have helped me make peptide injections Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Powerock Pharma GHK CU 2500mcg 60 caps. 150 000mcg