Matrix Total Results Silk Wonder Smoothing Oil is a nourishing, styling serum for those with frizz prone, dry and damaged hair. Leaves hair smooth, full of shine and protected from frizz. Reduces split ends and breakage due to heat styling. The perfect styling aid for those who use a flat iron to smooth their hair. How to use: Apply Iron Smoother Serum onto dry hair prior to using flat iron. Can also be used on mid lengths to ends to tame frizz and enhance shine once hair is styled.