The Shu Uemura Izumi Tonic Spring 2026 Gift Set offers a ritual inspired by Japanese haircare traditions designed to strengthen the hair fiber and improve resilience. Infused with ingredients inspired by rice water, this professional routine helps reinforce the hair structure while enhancing softness and natural shine from roots to ends. Helps strengthen the hair fiber and improve resilience Enhances softness and natural shine Professional ritual inspired by Japanese haircare traditions SET CONTENTS: Izumi Tonic Strenghening Shampoo — 300 ml / 10 fl. oz. Izumi Tonic Strenghening Mask — 200 ml / 6 fl. oz. HOW TO USE Apply Izumi Tonic shampoo to wet hair and gently massage the scalp to cleanse and strengthen the hair fiber. Rinse thoroughly, then apply the mask through lengths and ends. Leave on for a few minutes before rinsing to reveal stronger, softer, and shinier hair.