Benzisothiazolinone
Benzisothiazolinone is a synthetic preservative used in many cosmetic and personal care products to prevent the growth of bacteria, yeasts, and molds. It helps to extend the shelf life of products and maintain their safety and efficacy. It is effective at very low concentrations.
PreservativeVegan
RiskHigh 2.5 / 4
Sensitization i2.8 / 4
Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.
Systemic exposure i1 / 4
Whether it has meaningful potential to be absorbed into the body at levels that may matter biologically. Most cosmetic ingredients score low unless there is known concern or high exposure.
Rated by SpottyLabs' ingredient methodology, independent of brands.
Things to watch
- Potential skin sensitizer
- Can cause allergic reactions in susceptible individuals
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Frequently asked questions
- What is benzisothiazolinone used for in cosmetics?
- Benzisothiazolinone is primarily used as a preservative in cosmetics and personal care products. It prevents the growth of microbes like bacteria and fungi, ensuring product safety and extending shelf life.
- Is benzisothiazolinone safe for sensitive skin?
- Benzisothiazolinone is a known sensitizer and can cause allergic reactions, especially in individuals with sensitive skin or a history of contact dermatitis. Patch testing is advisable if you have concerns.
