- Description
sing 16 high strength between 400 ~ 520 nm wavelength of blue light, it can whiten the upper and lower teeth at the same time.With Display can be time, Easy to carry.Regularly use whitening strips every three months to obtain a whiter, brighter smile.To reach and sustain a better teeth whitening effect try to reduce or avoid products such as smoking, drinking coffee, tea, colas or red wine, and eating highly pigmented foods such as cherries and blueberries etc.Please complete the course of all the strips within a two week period