Iodopropynyl Butylcarbamate

IPBC
Average
Warning
Pores
0/5
Irritancy
4/5
FA Safe
✅ Yes
Pregnancy
✅ Safe
Vegan
✅ Yes

Science & Benefits

A powerful preservative used to prevent mold growth. While zero-comedogenic, its high irritancy (Rating 4) makes it a risk for acne-prone skin that already has a compromised barrier. In 2026, it is restricted in many markets for leave-on products because it can trigger contact dermatitis that mimics acne flare-ups.