Benzisothiazolinone
Decode Label flags Benzisothiazolinone as a moderate concern in cosmetics and personal care (skin irritant). It was not found in any of the 893 published products we have analysed.
The concern
Preservative — contact sensitiser; not permitted in EU cosmetics
BIT belongs to the same isothiazolinone family as MI and MCI and is a recognised contact allergen. It is NOT permitted in EU cosmetics at all, though it remains common in household and industrial products — so its presence in a cosmetic sold elsewhere is worth knowing about. Cross-reactivity with MI is documented.
Most relevant to
Cited authority
EU Regulation 1223/2009 Annex II; SCCS; contact-dermatitis patch-test series
Not found in this catalogue
0 of 893 published products Decode Label has analysed list Benzisothiazolinone or any of its label synonyms. That describes this catalogue, not the Indian market as a whole. If a product we score lists it, it will appear here and its score will reflect it.
Identity
Also appears on labels as
Questions
Is Benzisothiazolinone safe?
The concern is cited to EU Regulation 1223/2009 Annex II; SCCS; contact-dermatitis patch-test series. Why it is flagged: Preservative — contact sensitiser; not permitted in EU cosmetics. Decode Label treats it as a moderate concern in cosmetics and personal care. It was not found in any of the 893 published products we have analysed.
How common is Benzisothiazolinone in Indian packaged products?
Decode Label has not found Benzisothiazolinone in any of the 893 published products analysed so far. That describes this catalogue, not the Indian market as a whole.
Who should be most careful with Benzisothiazolinone?
People prone to allergies; People with eczema; People with sensitive skin.
Related ingredients
Other entries in the register with the same kind of concern.
Method and limits
- Prevalence counts published products whose decoded ingredient list matches this substance or one of its label synonyms, using the same matching the score itself uses. It describes our catalogue of 893 products, not the Indian market as a whole.
- Presence is not dose. An ingredient list gives order, not quantity, unless the pack declares a percentage. Nothing here estimates how much of this substance any product contains.
- A classification is not a verdict on a product. An agency classifies a substance under defined conditions of exposure; whether that matters in a given food or cosmetic depends on route, concentration and use.
- No regulatory rows. This substance is not matched in our regulatory warehouse, so the concern above rests on the cited authority alone.
- Last updated. This register entry was last changed on 28 September 2026.
- Corrections. Every figure here is reproducible from the sources named. If something is wrong, tell us and we will correct it and say what changed.