Kerastase Discipline Oleo-Relax Advanced Hair Oil for Voluminous and Unruly Hair is infused with the Morpho-Oil complex composed of 3 key oils that durably control frizz and humidity-induced volume for unruly hair. It provides 24 hours of hair manageability even under 80 percent humidity leaving hair smoothed, disciplined to maintain perfect morning shape. This lightweight oil protects hair from damage with up to 230 degree heat protection, making it the perfect heat styling primer. A deeply nourishing hair oil, it seals moisture into the fiber and ensures hair is sleek and homogeneous from root to tip.