Is crest's tooth paste useful for whitening teeth? Brothers and sisters who have used it come in and talk about it.

I have used it, and it really works, as long as you are not a tetracycline tooth.

I used a box and a half, and I dare not use it any more, because it is too white.

its principle is to remove tooth stains, which will naturally turn white.

After stopping using it for several months, it will be less white, but it is definitely a normal tooth color, because it is normal compared with the initial use.

In addition, my teeth will sting when I use it. Don't be afraid, it's the whitening ingredients that work. Beauty comes at a price, hehe.