Kérastase Elixir Ultime Hair Oil-In-Serum is a lightweight, nourishing treatment designed for all hair types. This luxurious serum combines precious oils to deliver intense shine and smoothness while protecting against heat and environmental damage. The advanced formula penetrates deeply to strengthen hair from within, reducing frizz and enhancing natural radiance. With regular use, experience visibly shinier, softer, and more manageable hair. Perfect for daily styling or as a pre-shampoo treatment, this 30ml bottle provides concentrated care that transforms dull, lifeless hair into glossy, healthy-looking locks.