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Quick Takeaways GHK-Cu is a naturally occurring copper-binding peptide that powerfully upregulates collagen synthesis and skin remodeling Most topical collagen products cannot penetrate your system dermally (through the skin), and do almost nothing at the tissue level The best results for loose skin come from the combination of systemic peptides and topical application strategies Peptides for loose skin work through receptor-mediated signaling and gene expression, rather than surface-level hydration Why Loose Skin Is a Biology Problem, Not a Cosmetic One The fitness and wellness industry has conditioned people to think loose skin is just a cosmetic inconvenience or an after-effect of massive weight loss

Human data

Animal-model research has investigated BPC-157 in the context of gastric mucosal protection, intestinal barrier integrity, and gut-lining repair-adjacent signalling

Regulatory Status : Research Use Only (RUO)

There is so much we do not fully understand of the intricate workings of the body and our environment

doi: 10.3390/nu14081550