GHK Cu might be trending, but its not new., Before you inject yourself with this viral peptide, consider this., This copper peptide has been studied for years in skin repair and collagen signalling, GlycyllhistidylllysineCu2+ rescues cigarette smokinginduced skeletal muscle dysfunction via a sirtuin 1dependent pathway Deng 2023 Journal of Cachexia, Sarcopenia and Muscle Wiley Online Library Copper, Collagen, and Controversy: Inside the GHK Cu Buzz GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? Copper peptides explained what are the differences between copper peptides and GHK CU peptides? What they actually do for the skin in terms of repair and collagen, and what you can and cant mix Conformational restriction blocks glutamate receptor desensitization Nature Structural & Molecular Biology