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: Copper Peptides for Skin: The Science, Benefits, and Best Practices Hubmed Peptide Therapy for Inflammation: A New Solution GHK Cu Copper Peptide: The Ultimate Peptide For Longevity GHK Cu is one of my personal favorites for a lot of reasons, but I can say without a doubt that it's use effectively stopped and reversed, my receiving hairline. However, there are