iWhite Diamond is a teeth whitening kit, you can apply at home. Includes the formulation directly in 10 pre-filled molds, for easy placement How to use : 1. Brush the teeth and the oral space before using it in each application 2. Use with dry hands 3. Remove the mold and place on your denture 4. Gently close your lips over the mold and carefully close your mouth. Caution: biting down too hard causes gel to ooze out of the mold and out of the tooth contact area 5. Remove mold after 20 minutes and discard immediately. Rinse gently with water.