This specialized protective smoothing serum from L'Oréal Professionnel is formulated to treat and protect damaged and sensitized hair, especially when used in conjunction with heat styling tools. It creates an optimal shield against high temperatures, ensuring the hair fiber remains resilient during thermal application. The lightweight formula aids in smoothing the hair cuticle, resulting in enhanced manageability, shine, and a sleek finish. Ideal for those seeking enhanced protection and flawless alignment for their hair structure.