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Long-term: The real benefit of glutathione is cumulative
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The C-terminus residue and its side chains interact with R289 and N345, respectively
GHK-Cu enhances collagen synthesis (types I and III), upregulates glycosaminoglycan (GAG) production, and modulates the balance between matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs)-thereby both promoting extracellular matrix (ECM) formation and controlling ECM degradation
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