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An 8-week randomized double-blind trial compared GHK-Cu in a nano-lipid carrier against Matrixyl 3000 and found a 55.8% reduction in wrinkle volume versus control serum, along with a 32.8% reduction in wrinkle depth

It is widely studied for its role in supporting angiogenesis (new blood vessel formation), collagen production, and localized tissue repair in muscles, tendons, ligaments, and the gastrointestinal system

Mumby S, Adcock IM (2022) Recent evidence from omic analysis for redox signalling and mitochondrial oxidative stress in COPD

They stick to your skin and release estrogen (and sometimes also a form of progesterone) into your bloodstream