Attention people, this new Wonderball hair brush by Mark Hill is fab. Stupidly (in a good way) simple in its design and nicely substantial in its quality, it is also very easy to use. You use it to dry your hair in an artful messy look, the ball shape allows you to twirl your damp hair easily into a loose twist as you dry it, resulting in a wavy unstructured ringlet, which adds volume and structure to longish hair. Admittedly it needs practise, the first time I did it I looked as if I’d been shipwrecked, but I stuck at it and now I might abandon all my other hair drying brushes. Also, if you have a bob, it does an amazing job of turning under your ends.