1. It is suitable for the yellow and black teeth of various kinds of exogenous turbid color, tea stain, coffee, cola, red wine, colored food and bad living habits.
2. for severe dental fluorosis and severe tetracycline teeth, the use of this product has been improved, but the effect is limited.
3. Clean your teeth with a toothbrush or dental floss first.
4. rotating at the back of the whitening pen to squeeze the whitening gel onto brush head, the teeth whitening gel evenly apply on the mandibular teeth, daub thickness of about 1 mm (usually, whitening range for each 8-10 teeth up and down).Each treatment takes 20 minutes and lasts a week.