POLYISOBUTENE is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.
POLYISOBUTENE
Safety grade: A
Polyisobutene is a synthetic plastic-like substance that acts like an invisible film on your skin or hair. It helps products stay together and maintain their texture.
This ingredient binds product components together, creates a protective layer on skin or hair, and thickens formulas to achieve the right consistency.
Graded using: COSING, FDA.
Last verified: May 26, 2026
Other Viscosity Controlling ingredients
- GLYCERIN — Grade B
- SODIUM CHLORIDE — Grade A
- COCAMIDOPROPYL BETAINE — Grade A
- BENZYL ALCOHOL — Grade C**
- PROPYLENE GLYCOL — Grade A**
- XANTHAN GUM — Grade A
- CETEARYL ALCOHOL — Grade A
- DISODIUM EDTA — Grade C