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Melatonin is the sleep hormone
Rather than focusing only on surface-level symptoms, our approach emphasises identifying and addressing the underlying root causes contributing to impaired healing, inflammation, skin aging, or tissue dysfunction
Koutroubakis 2004)
no proven morning-versus-night advantage Injectable use No FDA-approved product label or validated self-injection schedule Sources: Topical GHK-Cu phase 2 study Direct answer: There is no clinically proven universal best time for GHK-Cu
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