what is cyclopentasiloxane?
<answer> It is a silicon-based cyclic compound. <context> About CYCLOPENTASILOXANE: Cyclopentasiloxane (cyclomethicone) is a silicon-based cyclic compound; may be associated with environmental toxicity. Function(s): Hair Conditioning Agent; Skin-Conditioning Agent - Emollient; Solvent; SKIN CONDITIONING.