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Even a recent 2026 review concludes the same thing that GHK-Cu appears safe but the evidence is largely preclinical and comprehensive human RCTs are lacking (Wojcieszuk et al., 2026)
Product Specifications
Key Takeaway: A sustainable wellness routine is built on daily consistency
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A double-blind study Neuropsychobiology, 1992, Volume 26 (Issue 4), Pages 193-7
GHK-Cu supports the production of proteins and lipids that reinforce the barrier, reduce transepidermal water loss (TEWL), and promote smoother, more hydrated skin
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