Eternal You teeth Whitening is the latest technology out of the USA, using No Peroxide or Bleaching Agents. Eternal You will cause you no discomfort or sensitivity and has seen results from 4-15 shades lighter in just 1 hour. Eternal You uses a retractor and or tray with an LED light to achieve the smile you would like, in the kindest most natural way.This process will leave no side effects, sensitivity or discomfort unlike other products advertised. Visit Eternal You and change your smile forever......