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INCI ingredient

Pentasiloxane

Pentasiloxane appears on 4 ingredient lists in our database, most often in hand creams.

What it triggers

  • Vegan originNot sureorigin not on file
  • FragranceNonot a perfume ingredient
  • ParabenNonot a preservative of this family
  • SulfateNonot a sulfate surfactant
  • SiliconeYesthis is a silicone
  • AlcoholNonot a drying alcohol

If a product lists Pentasiloxane, its silicone-free answer is No. Nothing else changes.

What it does

Pentasiloxane appears on 4 ingredient lists in our database, most often in hand creams.

On the label it counts as silicone, which is why a product that lists it cannot be silicone-free.

We have not written the plain-language note for this ingredient yet; the facts above come straight from how it is classified.

Functions: antifoaming

In the EU ingredient database

Functions listed by CosIng
  • antifoaming
  • antifoaming: Suppressing foam during manufacturing or reducing the tendency of finished products to generate foam.

CAS 141-63-9 · EC 205-492-2

EU regulation

Not on a restricted-substances annex. Listed as an allowed cosmetic ingredient.

Source: CosIng, European Commission. Informative, no legal value; the regulation text is the reference.

Classification from the INCI name; product lists from Open Beauty Facts.Report a mistake