Piel

Cyclomethicone

INCI name: Cyclomethicone

Cyclomethicone is classed in the EU CosIng database as skin conditioning (emollient), hair conditioning and solvent. Piel groups it with silicones.

What it does

CosIng definition

Cyclomethicone is a generic name for a mixture of cyclic dimethyl polysiloxane compounds that conform to the formula, where n has a value between 4 and 6.

How Piel groups it

Piel's knowledge base files Cyclomethicone under:

Found in 342 products in Piel's catalogue.

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Identifiers

INCI name
Cyclomethicone
CAS number
69430-24-6 / 556-67-2 / 541-02-6 / 540-97-6
EC number
209-136-7 / 208-764-9 / 208-762-8
CosIng reference
33101

Data from Piel's records, September 19, 2026