Skin and respiratory disorders are a serious problem to hairdressers. They can reduce work capacity and lead to permanent inability to work. This book presents five epidemiologic studies using representative population samples. The studies focused on the working conditions in salons and perceived health of the hairdressers, prevalence, incidence and risk of skin and respiratory symptoms and diseases among hairdressers, and the risk and causes of leaving the profession. The physical conditions and chemicals in the ambient air were measured in 20 hairdressing salons.