There are two types of whitening performed by Japanese, 1.home whitening which is wearing a mouthpiece everyday at home or 2.office whitening which is whitening agent applied to the tooth surface and irradiates light by a dentist.
Office whitening is made white by making irregularities on the tooth surface and irregularly reflecting light, and periodic visits are necessary because it is easy to recolor. Also, because of the unevenness on the surface of the teeth, it becomes hypersensitive, and there is also a risk of getting teeth even yellower than the teeth before office whitening.
Shine SMILE enables home whitening by 3 easy steps (Fitting the mouthpiece, Switching on the LED, Brushing teeth lightly).