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GHK-Cu topical serum is the ready-to-apply format of glycyl-L-histidyl-L-lysine copper the same tripeptide-copper complex used in decades of published skin research, pre-formulated for direct dermal application rather than reconstitution and injection
Wilmot CA, Sullivan AC, Levin BE (1988)
Frequently Asked Questions They can be considered together under medical supervision, but strong human trials have not shown that the combination produces better clinical outcomes than either substance alone or other approaches
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