Nightingale faeces beauty treatment. Powder on a plate containing a mixture of dried faeces from nightingale birds (Luscinia megarhynchos) and white clay. This traditional skincare treatment has been used for centuries by Japanese kabuki actors and geisha to remove heavy makeup and as a facemask. The powder has been sterilised with ultraviolet light and must be mixed with water before application. Photographed at Hari's Salon, London, UK.