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We can't overstate the importance of this distinction when considering does GHK-Cu need refrigeration for your specific application
Healthy cells maintain a ratio of 100:1 or higher (99% GSH, 100:1 The reality is that glutathione declines with age-by age 60, levels can be 30-50% lower than in youth
Avoid same-application use with high-dose vitamin C (ascorbic acid), strong acids like glycolic or lactic at low pH, and strong chelating agents like EDTA at high concentrations
Can you advise on dosing or a research protocol
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