Preservativemedium risk Common irritant
Iodopropynyl Butylcarbamate
INCI · Iodopropynyl Butylcarbamate
Broad-spectrum preservative. Common sensitizer and allergen, especially in leave-on products.
Why dermatologists flag it
ACDS-listed preservative — frequent cause of contact dermatitis
Names to look for on labels
Iodopropynyl Butylcarbamate appears under any of these names — manufacturers choose between INCI, common, and local-language terms freely.
Iodopropynyl ButylcarbamateIPBC3-Iodo-2-propynyl butylcarbamate
Common product categories
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