Kerastase’s Elixir Ultime – Hydrating Hair Oil – Refillable delivers weightless hydration and a smooth, glossy finish with a blend of light silicones plus wild and French Camellia oils. The lightweight, leave-in formula softens and detangles quickly with one to two drops through mid-lengths and ends on damp or dry hair, while helping protect against heat styling and keeping hair touchably silky without heaviness. Suitable for all hair types, it helps control frizz for up to 96 hours, supports a stronger-feeling hair fibre, and boosts lasting shine for a polished look day after day, packaged in a glass bottle made with 30% recycled content and designed to be refilled using 95% recycled plastic.