Wow is an innovative temporary hair colouring system that instantly covers grey, roots and regrowth in minutes.  For the 75% of women who colour their hair, WOW is the perfect solution to use between salon visits to make sure regrowth and grey hairs are covered instantly.  WOW comes in 6 shades and has won numerous awards including Harper’s Bazaar Best Hair Innovation and Glamour Magazine’s Power List 2014.  Visit the Joshua Tree for your free trial.