Sensodyne is a brand name of toothpaste and mouthwash targeted at people with sensitive teeth. Sensodyne products are applied at home. Sensodyne is owned by GlaxoSmithKline and is marketed under the name Shumitect in Japan. Sensodyne is a brand name of toothpaste and mouthwash targeted at people with sensitive teeth. Sensodyne products are applied at home. Sensodyne is owned by GlaxoSmithKline and is marketed under the name Shumitect in Japan.