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These glutathione-synthesizing genes are part of the Phase II detoxification machinery in your body

As glutathione can improve the numbers and activity of macrophages, peptic ulcers may be exacerbated [40] Increased susceptibility to melanoma: Theoretically, long-term administration of systemic glutathione switches eumelanin to pheomelanin, and may increase the susceptibility towards development of melanoma in the long run

They also enhance the penetration and effectiveness of other topical treatments

Products That Work Well with GHK-Cu Hyaluronic acid serums: Pair beautifully with GHK-Cu for enhanced hydration and skin plumping