After a teeth-whitening session, the pores of the teeth will be slightly opened, putting them at risk of discoloration. It takes about 72 hours after a whitening for your teeth to be able to consume the food / products you would normally eat / drink.

Fortunately, The Smile Bar Hong Kong offers a perfect solution: The Nano Seal Total+. By using it at the end of your whitening, you will be able to keep your usual lifestyle, without any restriction, otherwise please follow the below advises about what’s good to drink and eat after a whitening.



Teeth are particularly susceptible to staining in the days immediately following a whitening session, and adjusting your eating habits after the procedure can help to maintain a brighter and whiter smile. It is suggested to avoid specific food and beverages temporarily and reduce the consumption of items that cause discomfort to sensitive areas of your mouth.

“The rule is anything that can stain a white T-shirt can stain your teeth too,” says Marc Liechtung, DMD, specialist from New York in cosmetic and restorative dentistry.

While you certainly don’t have to give up your morning cup of coffee or your evening glass of red wine, if your teeth are discoloring, you might want to consider consuming less and thoroughly rinsing your mouth with water after you’re done eating or drinking.


Tea and Coffee
Orange juice (cordial and fresh), Blackcurrant juice, Cranberry juice
Grape Juice, Tomato juice

In other terms all dark fruit juices due to their acidic content

Black Coffee and Black Tea – the darker the beverage, the more staining can occur. So try adding a little extra milk to lighten the color and reduce the staining effect.

Colas and Sports Drinks – they are highly acidic which facilitate staining by other products.

Juice – grape , pomegranate and cranberry are highly pigmented and can cause staining. So, if you must imbibe, try rinsing your mouth with water or drinking juices through a straw, thereby bypassing the front of your teeth.

Ice cream or frozen yoghurt – could cause discomfort due to their full fat milk content

Alcoholic Drinks

Both red and white wines, if taken in excess, will stain your teeth.
Although red wine stains, white wine’s acidic composition actually etches tiny grooves in your teeth, making them more porous and more easily stained. In a general way it is better to avoid colored alcoholic drinks and also fizzy alcohol like beer as it has adverse effect (it blocks the Teeth Whitening process).


After a teeth whitening session, several ingredients are particularly likely to stain your pearly whites. Staining culprits include dark chocolate, dark soups, stews, beets, tomato sauces, dark marinades, soy sauce and blueberries. Various cuisines may also darken your teeth due to the liberal use of different sauces and spices. Avoiding these items can help your teeth whitening session work as effectively as possible.

Red meats – including pork, lamb and beef or any other red meat products such as bacon or sausages, tuna, sardines, prawns, crab, crabsticks and colored soups, as these contain colorings.

Stew, Dark marinades
Spinach, Peas, Sweetcorn, Green bean, Broccoli, Mushrooms, Beetroot, Tomatoes, Sprout, Asparagus
Blueberries, Carrots (which is good after 72hors Cf. WHAT’S GOOD)
Brown rice, Dark Pasta, Dark Breads, Chocolate and Candies
Sauces that contain vinegar like Ketchup, HP sauce, Soy sauce, Vinegar

Pickles, Mustard, Curry
Colored soups

Berries – Blueberries, raspberries, cranberries, cherries and other berries, although excellent for your overall health, can stain your teeth. So, if you’re crazy for berries, be sure to rinse your mouth thoroughly with water after each indulgence.

Sauces – Soy sauce and tomato sauce, as well as other deeply colored sauces, are proven to have significant staining power

Pickles and ketchup – These acidic products are good at opening up the pores of your tooth enamel allowing an easy staining.

Balsamic Vinegar – While great on a salad, it can cause havoc to your teeth. If you must, try it on lettuce, which has a natural ability to provide a protective film over your teeth.

Salad dressings – Vegetable Salads that rich in carotenoids or xanthonoids are affecting the successful progress of the Whitening Treatment.

Candy – Sweets contain teeth-staining coloring agents. If your tongue turns a funny color, there’s a good chance that your teeth will too. Plus, it has an added double whammy negative effect because of all the added sugar in it.

Beets – Now here’s a vegetable that could put a powerful stain in your t-shirt, so, like all foods that stain, moderation is called for with this one.

Curry – Although great on Indian food, this yellow-staining can be harsh on teeth. So make sure to rinse thoroughly after indulging.

Fatty Foods – like un-skimmed milk, butter, creamy foods and margarines are to be avoided for a few days after the treatment.

Acidic Foods
The process of teeth whitening can leave teeth temporarily sensitive to acidic foods and drinks, leading to pain and discomfort while eating. Low-pH items such as oranges, grapefruit, lemons, limes, pineapple, vinegar, pickles and soft drinks can increase the acidity of your saliva, potentially damaging areas of your teeth temporarily affected by the whitening. Limiting these items after your whitening treatment can help you limit food- related pain and discoloring. According to the Consumer Guide to Dentistry, you may be particularly sensitive to acidic foods if you have gum recession, preexisting cracks in your teeth or leaking dental restorations.

Cold Foods
According to Janice E. Spada, dentist, teeth may be sensitive to cold temperatures for up to 36 hours after a whitening session. To minimize pain provoked by temperature, avoid cold foods, ice cream, frozen yogurt and other frozen desserts. If your sensitivity is extreme, avoid eating foods straight from the refrigerator and consume items at room temperature or warmer.

Other Items

Medications – Many doctors suggests to avoid, various anti-bacterial medications like tetracycline, as this may trigger teeth blots or a lessening in the intensity of the enamel.

Tobacco products – Get rid of Smoking and ingesting other Tobacco products, as the chemicals in these tobacco items may block the mineral that helps in building the pores after the treatment.

We hope you find this simple guide helpful and that you will find some creative ways to enjoy your meals while helping sustain the effects of your newly whitened teeth.