The Index · Antioxidant
Glutathione
Glutathione
Glutathione is an antioxidant used in brightening and environmental-defence formulas.
EmergingAntioxidant used in leave-on brightening formulas; stability and vehicle strongly affect outcomes.
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Glutathione is an antioxidant used in brightening and environmental-defence formulas.
What it does
Antioxidant or vitamin C–related ingredient used in brightening and environmental-defence serums.
The evidence
Evidence grade emerging: Antioxidant used in leave-on brightening formulas; stability and vehicle strongly affect outcomes. Credible chemical identity and cosmetic-use context come from CIR/SCCS/manufacturer INCI definitions and databases such as SpecialChem/PubChem[1].
How to use it
Expect this as a supporting INCI line item unless labelled as a featured active.
Evidence by claim
Graded separately; the entry grade is the best-supported claim
Glutathione is an antioxidant used in brightening and environmental-defence formulas.[1]
EmergingSafety & limits
Source and region, always
all — Used in cosmetics within conventional leave-on/rinse-off levels; see cited safety literature.[1] CA US EU UK
Sources · 2
Numbered as cited in the text
- [1]Cosmetic Ingredient Review. Cosmetic Ingredient Review safety assessment. CIR (2010)regulator
- [2]SpecialChem. SpecialChem INCI profile: Glutathione. SpecialChem (2024)other
Revision history
18 Sept 2026Drafted by botTheSkindex Desk