Forget boring old shampoo and conditioner. From masks to serums, there’s heaps of new haircare treats to try, and trichologists (or fancy scalp experts to you and me!) can’t recommend enough exfoliating your scalp if you want to encourage growth. But what are the best products to do this with? We put the leading scalp exfoliators to the test (cue Rapunzel-style flowing locks…)