By inhibiting NNMT activity, this compound may support improved cellular energy production and metabolic function

This may be due to copper's ability to enhance the expression of metalloproteinases (MMPs).16 MMPs normally regulate the degradation of collagen, and a specific one, MMP-1, may be responsible for the initiation of collagen fragmentation.17 Supporting this, a 2024 study noted that elevated MMP-1 levels appear to contribute to aging skin and that higher MMP-1 levels in mice led to:18 The loss and fragmentation of dermal collagen fibrils Contracted fibroblast morphology Reduced collagen production Increased expression of pro-inflammatory mediators Additionally, a 2016 study found that GHK-Cu significantly increased gene expression of MMP-1 and MMP-2 at the lowest concentration, which the studys authors considered to be one of the reasons the peptide was able to increase collagen and elastin production.19 So, what this could ultimately mean is that using too much GHK-Cu (or other copper peptides) may in theory increase the skins MMP-1 concentration above the levels involved in healthy collagen production, taking it into the collagen fragmentation and breakdown territory seen in older skin with naturally higher MMP-1 levels

This product is intended strictly for laboratory and in vitro research purposes and is not intended for human consumption, veterinary use, or clinical application
And then there are peptides short chains of protein-building blocks called amino acids
A 2022 paper in Aging characterised that epitalon protected against post-ovulatory aging-related damage of mouse oocytes in vitro (PMID 35413689), framing one route by which the compound engages reproductive-aging research
GHK-Cu has genuine, peer-reviewed scientific evidence supporting its ability to promote hair growth through multiple biological mechanisms