The invention relates to an oxidation dye composition for keratinic fibers, especially for human keratinic fibers such as hair, containing at least one oxidation dye and a thickening polymer with a plastic ether skeleton, in a medium which is suitable for dyeing. Target heat discharge quantity is calculated. Oral care material can be provided simultaneously to the first and second faces during use from the store of oral care material. When not used, the transparent magnifying member is clipped and hidden in the magnetic jacket, whereby the magnifier is protected from being scraped by any alien article. The hearing device may also include a signal processor for processing at least the target output signal and providing a processed output signal, and an output transducer for converting the processed output signal into an acoustic output to be provided to the ear of the user. %, and to the use of said composition for the production of a pipe or a supplementary pipe article.