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What is globally accepted for peptides in solution is that they are generally stable for 1-2 weeks at +4C, for 3-4 months at -20C and for 1 year at -80C
Topical GHK-Cu is used as a cosmetic ingredient, but injectable GHK-Cu is not approved
Its availability is limited, and it is still under investigation for its long-term efficacy and safety
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