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Its not just about keeping the muscle you have
Sun exposure can make dullness, tanning, and uneven tone return
This means no hidden ingredients, no unnecessary synthetic fillers, and a relentless focus on bioavailability
Those studies validate the general strategy of "needle, then deliver an active into the repair window," and GHK-Cu is a mechanistically sensible candidate for that slot, but readers should not mistake evidence for the strategy as evidence for this exact pairing
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