Sulfite antioxidant; releases SO2; asthma sensitization concern at high concentrations; EU Annex V limits; flagged EU allergen for sulfite hypersensitivity; used in oxidative hair colour as reducing agent
Function & Common Use
Antioxidant / Reducing Agent / Preservative
Antioxidant
Oxidative hair dye kits antioxidant in some preparations
Synthetic (mineral)
Concentration Limits
No formal limit
Annex V as preservative: 0.2% as SO2; in oxidative haircolour: max expressed as SO2
Frequently Asked Questions
Is Sodium Metabisulfite safe to use in skincare?
Sodium Metabisulfite has a Medium concern rating. Sulfite antioxidant; releases SO2; asthma sensitization concern at high concentrations; EU Annex V limits; flagged EU allergen for sulfite hypersensitivity; used in oxidative hair colour as reducing agent
Is Sodium Metabisulfite allowed in India?
Sodium Metabisulfite is currently classified as "Permitted" under Indian cosmetics regulations. The maximum permitted concentration is No formal limit.
What is Sodium Metabisulfite used for in cosmetics?
Sodium Metabisulfite functions as: Antioxidant / Reducing Agent / Preservative. It is commonly found in: Oxidative hair dye kits antioxidant in some preparations.
Regulatory Status
EU Annex: Annex V
Identifiers
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