Im trying to lighten my teeth just a shade and I tried the gel mouth tray thingy but the gel foams up and gets all in my mouth and then I have to spit it out cause they said don't swallow it so then its not any use cause I can't keep it in my mouth for the required time. Is there anything that works?

Crankiebabie, whitening toothpastes contain polishing or chemical agents that work to improve tooth appearance by removing surface stains on your teeth. They do this by gently polishing off the stains or through a chemical reaction called chelation.

Dentists use 35 percent peroxide to bleach their clients teeth and the treatment last an hour. They also have over the counter tooth whitening products with 10 percent peroxide and the effects takes a few weeks to show results.

Whitening kits from Rembrandt, Colgate Simply White, and Crest whitening strips also lighten the color of your teeth. Hope this helps.