Kérastase Discipline Huile Oleo-Relax is an innovative, refillable hair oil designed specifically for managing voluminous and unruly hair. This remarkable formula restores and seals hair fibers, effectively combating humidity for long-lasting control. With its fast-acting properties, it transforms hair into sleek, supple strands that shine throughout the day. This oil also provides exceptional heat protection, shielding your hair from temperatures up to 230°C.