NEW YORK (Reuters Life!) - Forget avocado, evening primrose oil or other exotic ingredients, the latest facial to hit New York is a mask made with bird excrement. The Geisha Facial, available at Shizuka New York for $180, about $100 more than the shop's other facials, contains nightingale excrement. The Japanese powder, also known as uguisu no fun, is rich in the amino acid guanine, said to brighten and cleanse skin. In the 18th century geishas and kabuki actors used the powder to clean heavy white makeup off their faces. "I'm always trying to bring Japanese culture and tradition to...