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Individuals with autoimmune conditions like Hashimotos or celiac disease
GHK-Cus ability to remodel scar tissue through its balanced MMP regulation (breaking down disorganized collagen in scars while promoting new, organized collagen formation) makes it particularly relevant for improving the appearance of stretch marks alongside loose skin
Additionally, researchers have observed interactions with the dopaminergic and serotonergic systems in neurological models, suggesting broad signaling pathway engagement
PMCID: PMC12195719
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