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When patients ask about GHK-Cu vs NAD+ , they are usually trying to answer one question: which one should I use first
In a controlled in-vitro study published in the Journal of Investigative Dermatology , GHK-Cu at 10 nM increased collagen synthesis by 70% relative to vehicle control in human fibroblast cultures (Pickart & Margolina, 2018)
Cycle your berberine usage
If youre approved and this is something that you want to do to improve your confidence and well-being, I say go for it
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