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Richards AB , Krakowka S , Dexter LB , et al
While GHK-Cu skin benefits are well-documented, some users report temporary irritation or breakouts, especially if used with incompatible products
The combination of these two peptides engages non-overlapping cellular axes
Animal studies suggest it works through specific cellular signaling pathways (FAK-paxillin and ERK1/2) to ramp up this repair process
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