(full text at http://www.nytimes.com/2012/07/05/fashion/fertilizer-for-the-face-beauty-industry-turns-to-animal-secretions-and-droppings-for-ingredients.html?_r=2) 

Emily Berl for The New York Times

Amanda Darbenzio of Manhattan gets a Geisha Facial at Shizuka New York Day Spa. Its secret weapon: bird dung


Fertilizer for the Face? By ALIX STRAUSS

 A RECENT Monday morning found me at Shizuka New York Day Spa in Midtown, getting the Geisha Facial, whose main ingredient is bird poop. The treatment, I was told by Asako Nunose, the aesthetician, originated centuries ago when Japanese entertainers damaged their skin from the high lead level in their white makeup. As a remedy, they used a mask containing nightingale droppings that had enzymes said to break down dead skin cells. For this modernized hourlong version, which costs $180, the excrement is sanitized under ultraviolet light, then mixed with rice bran, an exfoliant and brightener. Because the poop contains guanine, a nucleobase, it supposedly shines the skin as well.

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http://www.nytimes.com/2012/07/05/fashion/fertilizer-for-the-face-beauty-industry-turns-to-animal-secretions-and-droppings-for-ingredients.html?_r=2