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Users maintaining excellent sun protection, adequate moisturization, healthy diet supporting collagen synthesis (adequate protein, vitamin C, copper from foods), sufficient sleep, stress management, and avoidance of collagen-damaging habits (smoking, excessive alcohol) preserve treatment gains better than users with suboptimal skincare and lifestyle creating ongoing skin stress overwhelming GHK-Cu induced improvements
Notably, serotonin synthesis decreased in dorsal thalamus, hippocampus, lateral geniculate body, and hypothalamus
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Tolerance 97% well tolerated Exceptional safety profile in clinical studies
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