You can rest assured that the Magenta cosmetic teeth whitening procedure is only carried out by our Harley St qualified Cosmetic Technician. After an initial consultation we will discuss your expectations and possible results. The treatment is non-invasive and begins with an application of our whitening gel to the front teeth. The Magenta LED then activates the product and immediately begins the lightening process by swiftly penetrating the enamel of the teeth. A power booster treatment takes 20 minutes and is usually for previously lightened teeth, and a full treatment consists of two to three 20 minute applications.