Bottom line: If you are using a standard capsule, NAC is likely more effective at raising your internal levels
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
Support for Chronic Conditions Emerging research suggests that glutathione may have therapeutic potential in various chronic conditions, including neurodegenerative disorders, diabetes, and cardiovascular disease
Many dermatologists and aesthetic professionals recommend a combined approach using both together produces synergistic results that exceed either alone
A 1993 study by Uno and Kurata found that a similar copper-binding peptide (PC1031) increased follicular enlargement when applied to the back skin of fuzzy rats
Larazotide is a peptide designed to tighten these loose junctions and help close the gaps in the gut lining
