Brilliant's 5 minute tooth whitening kit is quick & easy to use & with regular use can give you a super sparkling smile up to 4 shades lighter in just 1 week. The gentle formula is free from peroxide & will give you a brighter, whiter smile safely & with the minimum of effort. Brush teeth gently to make sure they are clean before using the kit. Squeeze the brilliant whitening gel into both the upper & lower sections of the mouth tray.