CYCLOTETRASILOXANE is graded C (Moderate) by Expert·ING, based on COSING, FDA regulatory data. It is restricted under Sephora Clean (Prohibited).
CYCLOTETRASILOXANE
Cyclosiloxane D4
Safety grade: C
A lightweight, silicone-based ingredient that feels smooth and silky on skin and hair. It's a clear liquid that evaporates quickly and doesn't leave a greasy residue.
This ingredient softens and conditions skin and hair while helping other ingredients dissolve and spread evenly throughout the product.
Graded using: COSING, FDA.
- Sephora Clean — Prohibited
Last verified: May 26, 2026
Safer alternatives to CYCLOTETRASILOXANE
- DIMETHICONE — Grade A. Silicone emollient that conditions skin and hair similarly to cyclotetrasiloxane.
- CAPRYLYL GLYCOL — Grade A. Glycol humectant that softens skin and conditions hair while dispersing other ingredients.
- BUTYLENE GLYCOL — Grade A. Glycol solvent that conditions skin, disperses ingredients, and improves product spreadability.
Other Emollient ingredients
- CETEARYL ALCOHOL — Grade A
- GLYCERYL STEARATE — Grade A
- CETYL ALCOHOL — Grade A
- GLYCOL DISTEARATE — Grade A
- GLYCERYL OLEATE — Grade A
- HELIANTHUS ANNUUS SEED OIL — Grade A