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The ~1-2 mg/mL serum figures circulating in community sources are DIY formulation conventions, often borrowed from how GHK-Cu cosmetic serums are mixed, rather than results of any AHK-Cu human study
Feng and Stockwell, 2018)
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Freshly activated, its a super lightweight and watery face serum, making it easily layered into your skincare routine before or after other serums
Some research protocols study GHK-Cu in combination with related peptides such as BPC-157, Matrixyl (Palmitoyl Pentapeptide-4)
Should you take BPC-157 with or without food
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