BrandNewCake Brush Wood/Natural Hair 2.5cm (21cm) The BrandNewCake Brush Wood/Natural Hair 2.5cm (21cm) has a wooden handle with attached natural hair 2.5cm long. Natural hair is very nice to use for greasing baking tins, as it absorbs and holds grease well. After greasing the baking tin, the brush can be cleaned by hand. Just soak it in soapy water and then let it dry well.