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What's thinner is large, independent, long-term clinical trials on topical cosmetic GHK-Cu at a specific percentage in everyday use
Skin lightening Results become gradually visible after weeks or months, depending on genetics, hormonal status, and sun exposure
But what about therapies that aim at deeper repair
The acetyl group attached to the sulfur atom of cysteine not only protects the molecule from degradation but also enhances its ability to pass through cell membranes
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