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Natural Factors, Burnaby, BC, Canada): contains 300 mg l-glutathione per soft-gel capsule
Tokutake T, Kasuga K, Yajima R, Sekine Y, Tezuka T, Nishizawa M, et al
Limited Clinical Data: While glutathione is widely researched for skin benefits, studies examining its impact on hair colour remain minimal
Studies show that combining topical and oral glutathione delivers superior results than a single treatment method
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