Dural Hair Brush 9 Rows Thermo Ash Wood Boar BristlesHairbrushes made from thermo ash wood in classic designs. 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 is