SUN-IN gives you the same natural highlights you get from the sun- only FASTER! Lightens & brightens blonde hair, making it blonder. SUN-IN is easy to use, just spray it on for great highlights without the mess. SUN-IN is heat activated so you can get natural looking highlights from the sun or with help from heat of a blow dryer. SUN-INs new formula, with botanical extracts such as aloe, marigold, chamomile & flaxseed pampers your hair while it lightens. The light conditioners wont weigh hair down, leaving it smoother, full of body & more manageable. Special illuminators give hair an extra healthy dose of shine for a bright & shiny Sun in GENTLE is for moderate lightening, & is for blonde to medium brown hair