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Injectable copper peptides, administered by licensed professionals, deliver the peptides directly into the dermal layer
The primary barrier to topical absorption of cosmetic actives
A 2025 study published in Frontiers in Pharmacology examined GHK-Cu's effects in a colitis model, finding that it modulated SIRT1 and STAT3 signaling in colon tissue a reminder that this peptide's research footprint extends well past skin and hair into broader inflammatory and metabolic pathways
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On Day 3 post-injury, GHK-AgNPs and GHK-Cu-AgNPs achieved the highest closure rates (32% and 31%, respectively) compared with GHK-Cu and the positive control (both 25%) and the negative control (22%)
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