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ghk cu wound healing clinical study GHK-Cu is a copper peptide used in regenerative medicine to support collagen production, tissue repair, and cellular renewal throughout the body. It's for individuals looking to improve skin firmness, brightness, and visible GHK-Cu vs AHK-Cu: Which Copper
Description
The Pyo Study (2007) Pyo et al

The vitamin B12 was injected into one lesion only in each patient, and no change was noted in other lesions
The follicles aren't growing new hair yet, but they're stabilizing

PMID 14527323