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You need copper for your skin and your vascular system (and Im sure a lot more)

But there's an adverse side effect of microneedling, you can develop foreign body reactions to the other products you apply on your skin," warns Dr

Breaks maintain receptor sensitivity and allow copper levels to normalize

A proposed two-phase stem cell model suggests copper-free GHK promotes stem cell replication and survival, while GHK-Cu (with copper) promotes differentiation

Enhanced GAG production explains why many users report improved skin hydration and plumpness alongside wrinkle reduction, effects that pure collagen-stimulating treatments wouldn't produce