INCI Name

Cyclomethicone

Cyclomethicone is a generic INCI name historically used for blends of cyclic siloxanes (typically D4, D5, and D6 mixtures). CAS number 69430-24-6. Modern INCI specifications increasingly prefer the specific names (Cyclopentasiloxane, Cyclohexasiloxane) for transparency. Regulatory note: Same EU REACH restrictions apply to cyclomethicone blends as to D5.

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