iWhite instant is an easy to use, dental safe and instant teeth whitening product. This at home treatment should be worn for only 20 minutes a day for instant results, up to 8 shades whiter. The product can be used for 5 consecutive days for even more astonishing results or you can use it once in a while whenever you feel it is necessary. The one size fits all trays are pre-filled with active gel and hygienically packed. iWhite gives instant whitening and actively removes stains, thanks to the unique film crystallised technology, this innovative one step whitening system provides an immediate natural whitening effect. It delivers a highly soluble source of Calcium and therefore strengthens the teeth. It is a one step system no need to clean or boil mouthpieces, mess with syringes or brushes, measure gel or use special toothpaste or rinses. The tray is designed to whiten both the back & front of the teeth. This is important as teeth are translucent and stains on the back can show through the front. It is easy to wear and use, the one size fits all trays are soft and flexible. There is no mixing involved, each tray is filled with just the right amount of whitening gel, which is formulated specifically to prevent sensitivity. And this product is clinically proven to be safe and effective. To use: Brush teeth gently before application. Make sure your hands are dry and clean. Remove the pre-filled tray from the sealed sachet and immediately place the tray in your mouth ensuring the gel is in contact with the tooth surface. Upper and lower teeth can be whitened at the same time. Gently close your lips over the tray and carefully close your mouth. Caution: biting too hard can case excess gel to ooze out of the tray and away from the teeth. Remove the tray after 20 minutes and discard immediately. Rinse away with water the remaining gel from your teeth and gums.