Opalescence ® is a proven teeth whitening treatment that eliminates organic stains on the teeth and significantly brightens the smile. Opalescence ® can be used with or without light activation of the gel provided at the discretion of the dentist. Opalescence ® is an exceptionally quick and simple treatment. Bleaching gel is applied to the teeth for around 45 minutes. Opalescence ® is completely safe and helps to protect dental enamel during treatment with added potassium nitrate and fluoride.