" A flaky skin was particularly bad if you were a criminal, she had read, as it meant that you left a great deal of DNA at the scene of the crime. That had amused her. That would teach any flaky-skinned housebreakers to burgle people’s houses. “You really need to do something about your skin,” the police might say to such people when they arrested them. "

― Alexander McCall Smith , The Colors of All the Cattle (No. 1 Ladies' Detective Agency, #19)