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optional extension to 12 weeks with periodic breaks

Simultaneously, the GHK-Cu complex has been shown in vitro to interact with components of the TGF- superfamily signaling axis and to up-regulate expression of anti-apoptotic and extracellular matrix (ECM) remodeling genes, including those encoding fibronectin, collagen I, and various matrix metalloproteinases (MMPs) as well as their inhibitors (TIMPs)

These effects are temporary and usually resolve within a few days

doi: 10.1038/s41598-023-49089-y 61 ArraMAbu-AmerY

If you notice excessive hair shedding after starting glutathione, consider discontinuing its use and consult a healthcare professional to rule out other causes