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10.1007/978-3-030-68748-9_11 Adv Exp Med Biol
The authors noted that GHK-Cu consistently demonstrated: 70% increase in collagen production in cultured human fibroblasts relative to untreated controls, observed at concentrations of 1-10 M
In real skin care use, people reach for it when they want a smoother texture, softer fine lines, and a firmer feel over time
However, because regulatory status varies and research remains limited, individuals should use caution when evaluating dosing claims found online
Quality, dosing, route of administration, and medical supervision matter greatly
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