Why are teeth whitened by hotel toothpaste?

The toothpaste provided by the hotel usually contains bleach and ingredients to remove tooth stains, which can help clean and whiten teeth. Bleaching agents usually contain oxidants, such as hydrogen peroxide or sodium bicarbonate, which can remove stains and pigments on the surface of teeth and make teeth look whiter.

In addition, abrasive particles in toothpaste can also help remove dirt and pigments from teeth. These tiny particles will play a slight friction role when brushing teeth, effectively removing the attachments on the tooth surface.

Therefore, brushing your teeth with toothpaste provided by the hotel can make your teeth look whiter, but please note that this effect is temporary. You still need to brush your teeth regularly, maintain good oral hygiene habits and keep your teeth white.