Skip to content

Thickener

POLYSILICONE-21

CAS 1013922-83-2
82

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A silicone-elastomer thickener that gives products a soft-focus, powdery finish. Inert, non-reactive, well-tolerated; very high molecular weight limits skin penetration.

Function

VISCOSITY CONTROLLING

Skin benefits

  • Thickens silicone-based formulations
  • Soft-focus optical effect
  • Lightweight, powdery feel
  • Non-irritating elastomer

Known concerns

  • Not readily biodegradable
  • Heavy MW silicone class

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

Related thickeners

82
ACRYLATES/C10-30 ALKYL ACRYLATE CROSSPOLYMER
Thickener
 82
ALUMINUM DILINOLEATE
Thickener
 82
BIS-(BUTYL POLYDIMETHYLSILOXYL) BIS-OCTYL PYROMELLITAMIDE
Thickener
 82
C18-22 HYDROXYALKYL HYDROXYPROPYL GUAR
Thickener
 82
C18-38 ALKYL C24-54 ACID ESTER
Thickener
 82
CARBOXYMETHYL HYDROXYETHYLCELLULOSE
Thickener
 82
DEXTRIN BEHENATE
Thickener
 82
DEXTRIN PALMITATE
Thickener

Check your shelf

Find POLYSILICONE-21 in your products.

Scan any cosmetic product with LuxSense to see if it contains POLYSILICONE-21 and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.