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Hiroki Kitakata et al
GHK-Cu displaces Keap1s Cu coordination (Log K ~16 for GHK-Cu versus ~8 for Keap1 cysteine-zinc coordination) to stabilise Nrf2 and drive nuclear translocation
Coffee can: slower glow progress uneven absorption weaker antioxidant response less stable melanin balance You will still glow, but results may come slower
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