Wella SP Smoothen Mask beautifully controls your unruly hair in 5 minutes. A smoothing intensive treatment this mask is a detangling & calming treat that leaves coarse hair luxuriously supple. An essential component of the SP Smoothen line Wella SP Smoothen Mask is formulated with an Active Cashmere Complex to perfectly control & care for unruly & coarse hair giving it a delightful suppleness as well as providing anti frizz protection. Directions Distribute evenly through pre shampooed towel dried hair. Leave for five minutes. Rinse out thoroughly.