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Kerastase Masque Oléo-Relax Slim is an intense smoothing masque for thick, dry, rebellious hair designed to reduce volume and leave hair silky soft and super sleek. Formulated with Cera-Trioleum, a unique trio of oils including apricot, camelina and pracaxi which slim down the hair fibre for strength and control, it forms a hydraphobic barrier preventing the fibre from swelling and regaining excessive volume. Kerastase Masque Oléo-Relax Slim will leave hair nourished and smoothed with 24 hour anti-volume and anti-frizz protection. Directions of use: After cleansing hair with Bain Oléo-Relax. Gently massage one or two hazelnut sized amounts of Masque Oléo-Relax Slim into the lengths and the ends. For optimal smoothness, leave on for 10 to 15 minutes. Lather and rinse thoroughly.