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Does oral glutathione lighten skin? What the trials actually show

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By PYFOI8 September 2026

Does oral glutathione lighten skin? Trials suggest only modest short term changes for some users. See what the evidence actually shows.

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Sources

  1. [1]PubMed - The clinical effect of glutathione on skin color and other related skin conditions: A systematic review, 2019
  2. [2]Europe PMC - Glutathione as an oral whitening agent: a randomized, double-blind, placebo-controlled study, 2010
  3. [3]PubMed - Glutathione and its antiaging and antimelanogenic effects, 2017
  4. [4]ClinicalTrials.gov - Role of Oral Glutathione in Skin Whitening (NCT01016080), 2009
  5. [5]PubMed Central - A Targeted Metabolomic Assessment of Oral Glutathione Bioavailability and Safety in Humans: A Randomized Crossover Clinical Trial, 2025
  6. [6]PubMed - Effects of oral glutathione supplementation on systemic oxidative stress biomarkers in human volunteers, 2011
  7. [7]EFSA Journal - Guidance for the scientific requirements for health claims related to antioxidants, oxidative damage and cardiovascular health, 2018
  8. [8]PubMed - A review of the potential benefits and limitations of oral glutathione supplementation, 2025
  9. [9]Medsafe - Regulation of Dietary Supplements, 2025
  10. [10]Therapeutic Goods Administration - Determining if your product is a cosmetic or therapeutic good, 2024
  11. [11]ABC News - Beauty supplement claiming to be made in Australia to 'whiten skin' criticised as 'unethical', 2020

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