st is Cyclopentasiloxane: Cyclopentasiloxane is a silicone fluid commonly used in cosmetics such as deodorants, sunblocks and hair sprays"The forth ingredient on the list is Dimethicone crosspolymer:Dimethicone is another name for Polydimethylsiloxane (PDMS); it is the most widely used silicon-based organic polymer.A lot of people got blocked pores or reacted badly ( such as breaking out) to sili