These symptoms are generally short-lived and should vanish within a couple of days of the therapy finishing. Tooth lightening can be a really effective way of lightening the all-natural colour of your teeth without getting rid of any of the tooth surface area. teeth whitening baking soda can not make a total colour change, but it may lighten the existing color. You can additionally connect the light tray into your phone for on-the-go whitening sessions. The firm advises 10 mins a day for at least one week to see outcomes.