Our Teeth Whitening Serum contains Sodium Bicarbonate, Mentha Piperita (Peppermint) Extract, Galla Chinensis Extract. It brightens teeth, quickly cleans, neutralizes and removes yellow pigments, cleans dental stains and tartar, brightens teeth, and kills bacteria that penetrate deep into the alveolar and root canals. Its use is very simple: directly apply to the teeth, wait 2-3 minutes and then gargle, or apply to the toothbrush, gently brush 2-3 minutes after gargle can be used every day, the effect is better. It can remove the yellow color from the teeth, neutralize the pigment, whiten the teeth, and get the brightest smile without leaving any residue.