One study, lasted a month, reported that GHK-Cu might stimulate type 1 collagen production in clinical settings
This work was funded by the National Research, Development and Innovation Office of Hungary, grant numbers NNE-29617 (M-ERA.NET2 nanoPD) and K143766 (for M.A.D.)
They use pharmaceutical-grade ingredients, maintain sterile compounding environments (clean rooms), follow USP standards, and undergo regular inspections
Elsby R, Kitteringham NR, Goldring CE, Lovatt CA, Chamberlain M, Henderson CJ et al
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Low Glutathione Levels and What They Mean Stress, poor diet, alcohol use, medications, and natural aging all lower glutathione levels