What to Eat After Teeth Whitening: A 48-Hour Plan
Simple meals and drinks for the first two days after whitening, plus what to avoid.
Editorially reviewed. Dental review: scheduled, not yet completed for this article.
For the first 24 to 48 hours, what to eat after teeth whitening comes down to pale, mild foods and plain water. Colgate notes teeth are most prone to re-staining in that window, so it pays to skip coffee, tea, red wine, berries, dark sauces and acidic or fizzy drinks for a day or two.
Whitening, whether done in the chair or with take-home trays from your dentist, changes how your teeth respond to food and drink for a short time. Sensitivity to cold is common, and pigments in food can settle more easily. Planning a couple of days of meals in advance makes the aftercare easy instead of a guessing game at the fridge.
Why does diet matter straight after whitening?
Colgate’s aftercare guidance says your teeth are susceptible to yellowing in the first 24 to 48 hours after a whitening procedure. Strongly pigmented foods and drinks can stain more readily during that period. Separately, the Australian Dental Association warns that whitening can make teeth sensitive to cold temperatures, sometimes severely, so very cold food and drink may be uncomfortable for a while.
What can you eat in the first 48 hours?
A practical rule many people use: if it would stain a white shirt, leave it for later. Light-coloured, non-acidic options that fit that rule include:
- Breakfast: porridge made with milk, plain yoghurt, banana, white toast with a light spread, scrambled eggs.
- Lunch: a chicken or turkey sandwich on white bread, a plain cheese toastie, a potato and leek soup.
- Dinner: grilled white fish or chicken with mashed potato and cauliflower, plain pasta with a creamy or olive oil sauce, steamed rice.
- Snacks: mild cheese, crackers, a pear or apple without the skin if your teeth feel tender.
- Drinks: water and plain milk. If you are sensitive, let cold drinks warm a little first.
Colgate also suggests calcium-rich foods, which may help support enamel, and notes that crunchy fruit and vegetables such as apples, carrots and celery are believed to help clean teeth by stimulating saliva.
Which foods and drinks should you avoid?
| Avoid for a day or two | Reason given by Colgate | Easy swap |
|---|---|---|
| Coffee, black tea, red wine | Dark pigments that stain readily | Water, milk, or a weak milky drink later on |
| Cola and other dark soft drinks | Pigment plus acidity | Still water |
| Blueberries, blackberries | Strong natural colour | Banana or pear |
| Tomato sauce, soy sauce, dark gravies | Deep colours in sauces cling to teeth | Cream, cheese or olive oil based sauces |
| Citrus fruit and acidic, fizzy drinks | Can irritate sensitive teeth | Plain yoghurt or melon |
Smoking and chewing tobacco are worth avoiding too. Colgate notes tobacco stains can persist despite good daily care.
What if your gums or lips are sore afterwards?
Sensitivity is not the only possible side effect. The Australian Dental Association warns that if whitening gel touches the gums, lips or tongue it can cause chemical burns, which often turn into ulcers before they heal. If your mouth feels sore, stick to soft, mild, lukewarm foods, avoid spicy and acidic food and drink until it settles, and contact your dentist if the soreness does not improve. The ADA also advises that whitening is not recommended during pregnancy or while breastfeeding, so those meal plans can wait until later.
How long after teeth whitening can you eat normally?
Once the 24 to 48 hour window has passed, most people go back to their usual diet. That does not mean the result is permanent. Colgate’s longer-term tips for keeping whitening results include using a straw for dark drinks where practical, rinsing with water after coloured food and drinks, brushing twice a day with fluoride toothpaste, and keeping up regular check-ups and cleans. Your dentist may suggest occasional touch-ups with take-home trays when the shade starts to fade. Follow any specific instructions your own dentist gives you, as they know which product and strength was used.
What if you have crowns, veneers or white fillings?
This is worth knowing before you whiten rather than after. The ADA states that whitening will not change the colour of porcelain crowns, veneers or composite resin (white) fillings. If your natural teeth lighten and the restorations do not, they may look darker by comparison, and your dentist may need to replace them to match. A diet plan after whitening will not fix a mismatch, so talk about restorations at the consultation.
The ADA also recommends having whitening done by a dentist, dental hygienist or oral health therapist, who can advise on preventing or treating sensitivity before treatment starts. For more on methods and what results to expect, see our guide to how teeth whitening works in Australia, and for prices, teeth whitening cost in Australia.
Sources
- Colgate, How to Maintain Your Newly Whitened Smile
- Australian Dental Association, Teeth Whitening
This article is general information and is not a substitute for advice from your own dentist.
