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Rather than directly suppressing inflammation or repairing tissue, it works at the level of immune system regulation, promoting the development and function of regulatory T cells that keep autoimmune responses in check
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At a molecular weight of approximately 340 Da as the free tripeptide (see the GHK-Cu compound overview), it sits below the 500 Da threshold commonly associated with good dermal penetration a key reason GHK-Cu topical serum formulations achieve dermal absorption where many larger cosmetic peptides do not
A 2026 UK evidence review of the synaptic plasticity hypothesis, BDNF, fear extinction & SSRI alternatives
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Crit Rev Clin Lab Sci 2006
