Wella Professional Ultimate Smooth Miracle Oil Serum is a delicate hair oil (with serum texture) that deeply nourishes hair inside and out leaving it visibly smoother and shinier. It nourishes in 30 secs, with a smoothness lasting up to 3 days, when using Ultimate Smooth Miracle Oil Serum if unwashed for 3 days. Helps to protect hair from UV light & heat (230C/450F). Provides 96 hours frizz control & silky shine. Up to 85% smoother hair and up to 6x easier combing.Free from animal derived ingredients and committed to no animal testing. Dermatologically tested.