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Key Benefits of GHK-Cu Skin Rejuvenation: GHK-Cu can firm and tighten loose skin by stimulating collagen and elastin production, restoring the structural proteins responsible for skins bounce and resilience

This modification confers three critical advantages: Chemical stability: The acetyl group protects the sulfhydryl group from oxidation during transit through the GI tract the primary reason standard glutathione is degraded before absorption

Peptides containing cysteine, methionine, asparagine, glutamine, or tryptophan may be especially sensitive

Despite there being no research directly on the copper uglies phenomenon, it may be due to the peptides effects on collagen