Sam McKnight He is the most renowned hairdresser in the world. Written remains. He has worked for nearly five decades in the fashion industry with Linda Evangelista and Cara Delevigne. He "invented" Princess Diana of Wales's famous bob and Kate Moss's faux-unkempt mane. You may not be able to have Sam do your hair at home, but you can have its products, designed so that in an easy way you get the hair you want. Who would have thought it? You, sharing a hairdresser with Kate Moss and Princess Diana...