Here are some tips from the professionals:
Use a straw
If possible, sipping drinks that are harmful to your tooth color with a straw directed towards the back of the mouth will limit the time of contact with the enamel, which will reduce the effects of dulling and staining.
Brush your teeth often second
quite logically, brush your teeth at least twice a day and as soon as possible after consuming offensive products.
Skip natural toothpaste
The best way is to use a toothpaste that contains fluoride or hydroxyapatite, These will work to remineralize the tooth and make it stronger, If you have sensitive teeth, look for a toothpaste with calcium hydroxide that does not have the same mineral results as hydroxyapatite.
Professionals discourage the use of natural pasta, This toothpaste has nothing to remineralize the teeth, Then, for best results, alternate using a whitening toothpaste instead of your regular non-abrasive toothpaste, Whitening toothpaste contains silica that removes stains that can accumulate between regular cleaning.
Floss every day
You can never floss enough. Make it a habit.
Choose an alcohol-free mouthwash
Alcohol dries the mouth, which limits saliva production and if overused, can dry the gums.
It is important when consuming pigmented food or beverages to drink plenty of water. Drinking water neutralizes the pH of the oral cavity and helps to remove food or beverage residues from the mouth.
Eat green vegetables
Eating leaf foods or foods that you really need to bite into will help remove some stains on your teeth and prevent plaque from accumulating.