Your Beaut teeth whitening kit whitens & brightens your smile in just 15 minutes. 1-2 shades lighter after each treatment 15-minute session No sensitivity Steps to Whiter Teeth: Brush and floss your teeth Open the back of the LED light remove batteries to remove the plastic battery saver Place batteries back inside the light and secure close. Apply whitening gel to the top and bottom sides. Insert the mouth tray -tap the power button- and whiten your teeth within 15 minutes. Smoke free