ETHYL POLYSILSESQUIOXANE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
ETHYL POLYSILSESQUIOXANE
Safety grade: A
This is a silicone-based ingredient that forms a protective coating on nails. It's a lab-created compound designed to create a smooth, flexible layer that helps strengthen and protect nails.
This ingredient conditions and protects nails by forming a protective film that helps improve nail flexibility, strength, and appearance while reducing brittleness.
Graded using: COSING.
Last verified: May 26, 2026
Other Nail Conditioning ingredients
- COMMIPHORA MYRRHA RESIN EXTRACT — Grade A
- ECHINACEA ANGUSTIFOLIA ROOT EXTRACT — Grade A
- VACCINIUM MYRTILLUS LEAF EXTRACT — Grade A
- 2-METHYLPROPANAL — Grade A**
- 4,4'-ISOPROPYLIDENEDIPHENYL/EPICHLOROHYDRIN COPOLYMER DIACRYLATE — Grade A
- ACETALDEHYDE — Grade F**
- ACRYLIC ACID — Grade A**
- AMP-ISOSTEAROYL HYDROLYZED SILK — Grade B