By Tanner Garrity Dr. James Hamblin is a self-professed “soap dodger,” which sounds like the sort of movement you’d learn about from a B-list movie star in an annoying GQ interview, but the 39-year-old physician knows his stuff. He’s a public health lecturer at Yale, a longtime contributor to The Atlantic and the author of two books on the intersection of health and hygiene. In his book Clean: The New Science of Skin and the Beauty of Doing Less, Hamblin dispels a number of misconceptions surrounding cleanliness, and details his personal experimentation in cutting soap, shampoo and other clean…