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: Dr Jonas Programs GHK Cu (Copper Peptide) injections are gaining popularity in regenerative and anti aging medicine because of their powerful healing and restorative effects. Here are 5 medically recognized benefits: Stimulates Collagen & Elastin Production GHK Cu Wellness peptide craze: why people are injecting drugs 'not for human consumption' Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline