Add Yahoo as a preferred source to see more of our stories on Google. A close up of someone smiling. At-home teeth whitening kits or toothpastes are great for getting a whiter smile at home without ...

The most common toothpaste ingredient is fluoride, which protects against cavities. Choose a toothpaste with calcium carbonate or hydrogen peroxide if you want to whiten your teeth. Avoid toothpaste ...