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Collagen is needed in order to keep the skins firmness and elasticity
PachecoYValeyreDEl JammalTValleeMChevalierFLamartineJet alAutophagy and mitophagy-related pathways at the crossroads of genetic pathways involved in familial sarcoidosis and host-pathogen interactions induced by coronaviruses
PMID: 10440166
Aging 14 , 60066027 (2022)
What isn't established is that this translates into the dramatic, precisely-quantified superiority commonly claimed, and what's often left out entirely is that topical GHK-Cu, including our own 1% GHK-Cu Face and Skin Serum, has more, not less, human clinical evidence behind it, plus a regulated supply chain with verifiable manufacturing standards
The body does not seem to adapt to it in a way that reduces effectiveness over time
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