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For context, retatrutide, another metabolic-pathway compound, operates on different receptor systems again
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Research consistently shows it delivers the strongest antioxidant protection and collagen synthesis support
This is a safety consideration independent of the protocol itself
Because the skin barrier limits how much peptide reaches the dermis, community protocols sometimes pair AHK-Cu serum with microneedling and microneedling carries its own local risks independent of the peptide
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