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Englund A, Lange AH, Hagemann CA, et al

The micro-channels created by the needles also temporarily increase permeability, improving topical GHK-Cu uptake if applied in the post-procedure window

Stratum corneum The outermost layer of the skin, approximately 10 to 20 micrometers thick

Yet the deeper story of GHK-Cuits influence on gene expression, tissue remodeling, and regenerative signalingsuggests that we may only be beginning to understand the full potential of this small but biologically powerful peptide

GHK-Cu binds to extracellular matrix proteins (collagen, fibronectin, heparan sulfate proteoglycans) and copper-dependent enzymes like lysyl oxidase