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My tolerance was pretty high
What purity is your GHK-Cu, and is it lab-tested
Also, cooking and pasteurization reduce its levels by 30% to 60%
Key Takeaway: Glutathione works by inhibiting the enzyme tyrosinase and encouraging the body to produce lighter pigments instead of darker ones, supporting a more uniform complexion from the inside out
Plan around the 28-30 day stability window for both compounds
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