Izumi Tonic strengthening hair mask with rice water for brittle hair. Izumi - spring in Japanese - strengthens and energises hair and is inspired by yu-su-ru, the ancient Japanese tradition of bathing hair in rice water. This rich balm, used in conjunction with izumi tonic, strengthens, thickens, moisturises and adds radiant shine to the hair. The hair is soft, supple and full of radiance.Application: After cleansing with Izumi Tonic Shampoo, apply to hair lengths and ends, leave on for 5 minutes and rinse. Finish with Izumi Tonic Serum.Hero Ingredients:Inspired by yu-su-ru, the ancient Japanese tradition of bathing the hair in rice water.Infused with our precious rice water, known for its strengthening and thickening properties.Results:Hair is up to 30 times stronger, denser and larger in diameter, protecteddiameter, is protected from breakage and split ends are reduced by up to 91%*. Hair is soft, supple and full of shine.*Test results for shampoo + mask + serum.