Dural Hair Brush Half-Round Thermo Ash wood Boar BristlesHairbrush, half round length 205 mm, pure wild boar bristles. Thermally modified timber (TMT) is wood treated at high temperatures, and this process changes its characteristics in such a way that it is sometimes described as domestic tropical timber. In the controlled atmosphere of a special chamber the timber is treated at temperatures of up to 250 C. Due to the heat and humidity, the sugar compounds in the wood (hemicellulose) are reduced, the sugar