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Copper peptides GHK-CU similarly target collagen synthesis through different mechanisms and are sometimes used alongside GLP-1 therapy for skin quality

PubMed PMID: 30727890

It is an intracellular metabolic-enzyme modulator, which is why its research read-outs are things like NAD+ levels and adipocyte gene expression, not how full you feel. That mechanistic distinction is the single most important thing to understand before looking at any dose number

Oral ingestion of HC increases the levels of collagen-derived peptides in the blood torrent and improves the skin properties such as elasticity, skin moisture, and transepidermal water loss