preservative
Iodopropynyl Butylcarbamate
Watch if sensitive·Strong evidence
A halogenated preservative used to prevent microbial growth in leave-on and rinse-off cosmetics. Published assessments consider it safe at permitted use levels, but it is a recognized contact allergen; people with known sensitizer profiles or a history of cosmetic dermatitis should patch-test products containing it.
Worth knowing
- Known contact sensitizer for some
Questions
- What is iodopropynyl butylcarbamate?
- This is a broad-spectrum preservative used in rinse-off products like shampoos and soaps. It works by releasing iodine to prevent bacterial and fungal growth and is used at very low concentrations.
- Is this preservative safe?
- The published evidence does not report major safety concerns for iodopropynyl butylcarbamate in rinse-off products at permitted levels. People with iodine sensitivity should be cautious, as the ingredient releases iodine.
Products with Iodopropynyl Butylcarbamate
- 96EquateBeauty Moisturizing Lotion
- 90TRESemmeKeratin Smooth Shampoo
- 89SimpleKind to Skin Refreshing Face Wash
- 87O'Keeffe'sWorking Hands Hand Cream
- 87FreemanFeeling Beautiful Purifying Avocado & Oatmeal Clay Mask
- 83JoicoMoisture Recovery Conditioner
- 83Pond'sDry Skin Cream
- 81Salon LineS.O.S Bomba Original Condicionador
- 76Pond'sCold Cream Cleanser
- 75St. IvesGentle Smoothing Oatmeal Scrub & Mask
- 67Trader Joe'sRefresh Citrus Body Wash
- 66EquateAfter Sun Soothing Gel with Aloe
- 56Banana BoatSoothing Aloe After Sun Gel
References
Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.