This silicone-free, lightweight oil is densely packed with hair essential ingredients and a clinically-proven repair technology that works to repair damage, seal split ends and reinforce hair cuticles to protect against future breakage. The Don’t Despair, Repair! Strengthening Treatment Oil contains a clinically-proven repair technology that seals down hair cuticles that have been lifted through environmental damage and damaging treatments such as coloring, perming or chemical straightening.