Ammonium bisulfite
Ammonium bisulfite
Ammonium bisulfite is a mineral compound used as a preservative in cosmetic formulations. It acts by inhibiting microbial growth.
PreservativeRestricted use
Ingredient
Roles & functions
Preservative — Limits the growth of micro-organisms to preserve the product.
Regulatory framework
What the authorities say
| Authority | Status |
|---|---|
| Commission européenne (CosIng, Règl. 1223/2009) | Autorisé sous conditions |
| CLP classification (Reg. 1272/2008) | No CMR classification |
| ECHA — endocrine disruptor (human health) | Not identified as an endocrine disruptor |
| ECHA — Candidate List (SVHC, REACH Art. 59) | Not on the Candidate List (SVHC) |
| European Commission (Reg. 1223/2009, Annex III) | No cosmetic allergen subject to mandatory labelling |
| European Commission (EU catalogue of nanomaterials, Reg. 1223/2009) | No referenced nanoform |
| European Commission — Annex III (Reg. 1223/2009) — maj Fri, 07 Aug 2026 16:37:23 GMT | Permitted subject to restrictions (Annex III) — max (a) 0.67% (as free SO2) (b) 6.7% (as free SO2) (c) 0.45% (as free SO2) (d) 0.40% (as free SO2) in (a) Oxidative hair dye products (b) Hair straightening products (c) Self-tanning products for the face (d) Other self-tanning products — For purposes other than inhibiting the development of micro-organisms in the product. This purpose has to be apparent from the presentation of the product |
| European Commission — Annex V (Reg. 1223/2009) — maj Fri, 07 Aug 2026 16:37:23 GMT | Authorised preservative (Annex V) — max 0.2% (as free SO2) |
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This information is reported factually and with attribution (authorities and publications cited). It does not constitute medical advice, for your situation, ask a pharmacist or a healthcare professional for advice.
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