Brush after eating
The best way to whiten your teeth naturally, however not always the easiest, is
to simply brush your teeth after eating or drinking something. This takes a lot
of persistence and patience.
Quit Smoking
Most food does not stain teeth, but if you are a coffee drinker or if you
smoke, you can pretty much count on having discolored teeth over time due to
thinning enamel or staining.
Coconut Oil Pulling
Simply put a spoonful of coconut oil in your mouth and swish it between your
teeth for five to 20 minutes, or add a few drops to your toothbrush and brush
it on. Another option is to apply coconut oil to a corner of a clean washcloth
and rub it on the teeth.
Use Apple Cider Vinegar
ACV is especially helpful for removing stains due to common culprits like
coffee and nicotine (smoking). Studies suggest that for many with dark stains
it even works just as well as commercial products as a natural teeth
whitener.