Guido Palau. #HAIRTESTS. As one of the world’s most innovative and respected hair stylists, Guido's collaborations with photographers such as Steven Meisel and David Sims have resulted in some of fashion’s most iconic images. This new book, however, is far removed from a collection of previously published work. #HAIRTESTS has an immediacy and an urgency. It goes directly to the source. It is pure Guido. Pure talent!