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Concentrations of GHK-Cu in the body decline significantly with age, from approximately 200 ng/mL in young adults to under 80 ng/mL by age 60, making topical replenishment meaningful
This doesn't necessarily indicate risk, but it does mean we're relying on individual safety profiles and clinical judgment
Nord-sci guarantees our product purity by performing independent testing of our products and providing those certifications for our customers in our product descriptions
A one or two week supply mixed fresh and kept cold remains stable long enough for use, though this approach requires more frequent preparation sessions
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