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One particularly relevant comparison in the Matrixyl vs GHK-Cu literature involves post-laser resurfacing recovery GHK-Cu applied to treatment areas demonstrated measurably reduced recovery time and improved collagen density on biopsy compared to vehicle controls
W.et al (2004)
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The light modifier subunit GCLM is enzymatically inactive but plays an important regulatory function by lowering the Km of GCLC for glutamate and raising the Ki for glutathione (GSH) [7, 8]
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