Sun-in super brings out your natural highlights just like the sun - only faster! Lightens and brightens blonde hair - making it blonder. Brunettes lighten up and look sun-bronzed and kissed by the sun. It's easy to use and gradually lightens hair while you relax in the sun or use a blow dryer. Best of all, you control how light you go! Each time you use sun-in your hair gets lighter and brighter.