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Sodium Metabisulfite
Sodium MetabisulfiteAntioxidant
A reducing antioxidant salt used to protect easily-oxidized ingredients from discoloration.
What it does
Sodium metabisulfite is a sulfite salt used as a reducing antioxidant. It helps protect easily-oxidized ingredients — such as certain actives and dyes — from turning brown or losing potency by being oxidized itself first. It is a stability ingredient rather than a skin active.
This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
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