Dimethiconol is a non volatile, high viscosity, hydroxy-terminated polydimethylsiloxane gum. To facilitate its use, it is usually offered by supplier as a blend with a liquid silicone oil (e.g. Dimethicone or Cyclopentasiloxane).
Xiameter PMX 1503 from Dow Corning is a blend of Dimethicone and Dimethiconol. It is claimed to be film forming and non occlusive, with long-lasting, wash-off resistant benefits. It is mainly use in skincare as it imparts a silky, lubricious feel.