5. Bird Poop Facial
Yes, you read it correctly. It's a facial… using bird poop as its main ingredient.
Nightingale excrement, collected from the Japanese island of Kyushu, is being hailed as the hottest beauty wonder product. Part of the Bird Poop Facial at New York's Shizuka Spa, and the rather more romantic-sounding Geisha Facial at London's Hari's, the unique ingredient is said to leave skin with a healthy shine as it acts as an exfoliant.
Dried under UV lights, the excrement is mixed with rice bran and water in the spa and applied as a face mask. The £135 treatment is nothing new to the A-list, however - both David and Victoria Beckham have long been fans.