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Key Takeaway: The GHK-Cu literature remains largely pre-clinical, with stability handling and sourcing variability as the two operational risk factors most likely to compromise research reproducibility
We dont have FDA approval
At that stage it was described as a growth-modulating factor, and the copper had nothing to do with the story
Might be somewhat helpful in attracting water to the upper layer of the skin A preservative Is used to add opaque (non-transparent) appearance to formulations
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