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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
While the level of evidence for each compound varies, all of them lack the kind of large, well-controlled trials in humans that are necessary to establish safety and effectiveness, which is required for drug approvals
This gentle, personalized approach can help you avoid uncomfortable side effects and reach your goals at your own pace
10.1016/j.freeradbiomed.2007.11.008
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