PEI-1000 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
PEI-1000
Safety grade: A
PEI-1000 is a synthetic polymer—a chain-like molecule created in laboratories—that acts as a thickening agent. It helps control how thick or thin a product feels and spreads on your skin.
This ingredient thickens cosmetic formulas and adjusts their consistency, making products easier to apply and giving them the desired texture consumers expect.
Graded using: COSING.
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