HOME high-polymerization-dimethiconols high-polymerization-dimethiconols Results 2 X-21-5666 X-21-5666 A mixture of 30% high-polymer dimethicone and 70% volatile cyclopentasiloxane. X-21-5613 X-21-5613 A mixture of 20% high-polymer dimethicone and 80% low-viscosity dimethicone.