A hair stylist has revealed that we should only wash our hair once a week - and we can just use water to rinse it in between washes. Paul Windle, owner of Windle London, reveals that if you wash your hair too much you get a rebound effect and the scalp keeps making more oil - therefore making it look and feel more greasy. The top stylist also revealed that if our hair does feel dirty then a simple rinse with water can be just as effective as using a product, as shampoos and conditioners just loosen any dirt in...