Shu Uemura Izumi Tonic is a revitalising leave-in hair serum infused with rice water. The tonic is inspired by the ancient Japanese tradition of rinsing hair with rice water to keep it strong and healthy. Ceramides provide additional reinforcement. Izumi Tonic: Japanese beauty tradition for healthy, strong hair Using rice water as a hair treatment dates back to the Heian Period (794-1185 AD). At the time, Japanese women had floor-length hair that they bathed in rice water to keep it healthy and strong – a tradition known as Yu-Su-Ru. Geishas also knew about the benefits of rice water and used it as a secret weapon to maintain beautiful, shiny hair. In addition to rinsing their hair with rice water before combing, the Geishas also washed their faces with it to promote elastic skin and a bright complexion. Benefits of Shu Uemura Izumi Tonic Leaves no residue Strengthens hair from the roots to the tips Prevents breakage Silky shine and improved manageability Boosted volume and body How to use Shu Uemura Izumi Tonic Spray Izumi Tonic by Shu Uemura all over towel-dried hair from the roots to the tips and gently massage it in. Blow-dry and style as desired.