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This direct delivery method ensures that a significantly higher percentage of administered glutathione reaches systemic circulation in its intact, active form

GHK-Cu has been the subject of over 100 published studies spanning five decades of research, and the vast majority of that literature examines GHK-Cu as a single compound

patch testing is recommended for sensitive skin

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10.1002/stem.2696 51 ZengY.ZhangZ.WangW.YouL.DongX.YinX.et al (2020)

Immune system support: It helps support optimal immune function by maintaining adequate glutathione levels in immune cells, contributing to the body's natural defense against infections