Shaving Brushoiled thermowood and badger bristle Size: 9. 5 cmTo maintain the good quality, rinse the shaving brush out with clean water after use, as soap residues can eat away the glue. For drying always hang it up! Thermowood: The molecular structure of wood is altered in a kind of baking process at high temperature. The wood sugar is caramelized and the pores are closed. Exposure to heat gives the wood a fine, dark color. Wood processed in this way is called