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In a controlled human trial, GHK-Cu applied to skin raised collagen in 70% of volunteers, beating vitamin C (50%) and retinoic acid (40%), and improved firmness and elasticity

Telomere Biology This tetrapeptide has gained significant attention in longevity and anti-aging research based on findings suggesting it can influence telomere length, activate telomerase in somatic cells, normalize circadian rhythms, and potentially extend lifespan in animal models

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38, 39 Within the kidney, Ang II increases predominantly proximal tubular sodium reabsorption