Is Teeth Whitening Safe During Pregnancy?

Teeth whitening is an elective cosmetic treatment used to lighten the colour of natural teeth. However, NHS guidance does not recommend teeth whitening during pregnancy or while breastfeeding.

This recommendation does not mean that whitening has been proven to harm a developing baby. Instead, there is limited evidence about its use during pregnancy and breastfeeding, and the treatment can usually be postponed without affecting dental health.

Pregnancy may also make the gums more sensitive to plaque, inflammation and bleeding. Whitening products can cause temporary tooth sensitivity and gum irritation, so it is generally more appropriate to delay treatment until after pregnancy and breastfeeding.

Is Teeth Whitening Safe During Pregnancy? The Short Answer

Teeth whitening is not recommended during pregnancy. NHS guidance also advises against whitening while breastfeeding.

Professional whitening, dentist-prescribed whitening trays and products bought online or from shops should all be postponed. Whitening is a cosmetic procedure rather than an essential dental treatment, so waiting is the most cautious approach.

However, being pregnant does not mean that dental examinations or necessary treatment should be avoided. Pain, infection, decay, bleeding gums and other dental problems should still be assessed by a dentist.

Why Is Teeth Whitening Usually Postponed During Pregnancy?

The main reason is the lack of sufficient evidence about the use of whitening agents during pregnancy.

Professional whitening treatments commonly use peroxide-based gels. These products are designed to produce a chemical change in the colour of natural teeth. Although this does not mean they are known to cause pregnancy complications, there is not enough evidence to confirm their use is appropriate during pregnancy.

Because whitening is optional and can be carried out later, most patients are advised to postpone it rather than accept an unnecessary uncertainty.

Can Professional Teeth Whitening Be Carried Out During Pregnancy?

Professional teeth whitening should normally be postponed until after pregnancy and breastfeeding.

Before providing whitening treatment, a dentist should examine the teeth and gums to confirm that they are healthy and that whitening is suitable. This remains important after pregnancy because untreated decay, gum disease, cracked teeth or significant sensitivity may need to be addressed first.

Professional whitening may involve:

• Custom-made whitening trays used at home
• Whitening gel prescribed by a dentist
• Whitening carried out at a dental practice
• A combination of in-practice and home treatment

Although dentist-supervised whitening is the safest way to whiten teeth when treatment is appropriate, it should still be delayed during pregnancy and breastfeeding.

Can You Use Home Whitening Kits While Pregnant?

Home whitening kits bought from pharmacies, beauty retailers or online should not be used during pregnancy.

Products purchased without a dental assessment may:

• Contain unsuitable concentrations of active ingredients
• Fit poorly around the teeth
• Allow whitening gel to contact the gums
• Cause sensitivity or irritation
• Be used on teeth that have untreated decay or cracks
• Produce uneven or unpredictable results

NHS guidance states that whitening provided through a dentist is the safest option when a patient is suitable for treatment. Kits bought elsewhere may be less effective and may harm the teeth or gums.

Can You Use Whitening Strips During Pregnancy?

Whitening strips should also be postponed during pregnancy and breastfeeding.

Products described as peroxide-free, natural or suitable for sensitive teeth should not automatically be assumed to be appropriate during pregnancy. Marketing descriptions are not a substitute for an individual dental assessment or reliable clinical evidence.

Patients should avoid using a whitening strip or gel simply because it is available without a prescription.

Can You Use Whitening Toothpaste While Pregnant?

A standard fluoride toothpaste should continue to be used during pregnancy. Brush twice daily, including last thing at night, and spit out the excess toothpaste without rinsing immediately afterwards.

Some toothpastes marketed as whitening products mainly work by helping to remove surface stains rather than bleaching the internal colour of the teeth.

Patients with sensitive teeth, enamel wear, gum recession or inflamed gums should ask their dentist which toothpaste is most suitable. Highly abrasive products should not be used repeatedly in an attempt to obtain a faster whitening result.

Can You Whiten Your Teeth While Breastfeeding?

NHS guidance does not recommend teeth whitening while breastfeeding.

This advice is precautionary because evidence about cosmetic whitening during breastfeeding is limited. It is not necessary to speculate about whether a specific amount of whitening gel could enter breast milk. The clearer recommendation is simply to postpone an elective treatment until breastfeeding has finished.

Afterwards, a dentist can examine the teeth and gums and explain whether whitening is suitable.

What Should You Do If You Used Whitening Before Knowing You Were Pregnant?

Do not panic if you used a whitening product before discovering that you were pregnant.

Stop further whitening applications and mention the treatment to your dentist, midwife or doctor if you are concerned. The recommendation to postpone whitening is mainly based on limited evidence and the fact that it is an elective procedure, rather than proof that a brief previous use has caused harm.

Do not continue the course simply because it has already been started.

Can Pregnancy Make Teeth and Gums More Sensitive?

Hormonal changes during pregnancy can make the gums more vulnerable to inflammation caused by plaque.

Possible symptoms include:

• Bleeding when brushing or cleaning between the teeth
• Red or swollen gums
• Gum tenderness
• Increased plaque accumulation
• Bad breath or an unpleasant taste

This is sometimes described as pregnancy gingivitis. Whitening gel can also temporarily irritate the gums, which is another reason to postpone cosmetic treatment when the tissues are already more sensitive.

Bleeding gums should not be ignored. A dentist or hygienist can assess whether improved cleaning, professional care or treatment for gum disease is required.

Is Dental Treatment Safe During Pregnancy?

Postponing teeth whitening does not mean postponing all dental care.

Dental examinations and treatment for pain, infection, decay or gum problems remain important during pregnancy. Tell the dental team that you are pregnant or may be pregnant so that examinations, medicines and any necessary treatment can be planned appropriately.

Contact a dentist if you experience:

• Persistent toothache
• Facial or gum swelling
• A broken tooth
• Signs of infection
• Bleeding or painful gums
• Difficulty eating
• A loose filling or restoration

Necessary dental treatment should not be delayed solely because a patient is pregnant.

How Can You Keep Your Teeth Looking Bright During Pregnancy?

Although bleaching should be postponed, there are safe ways to maintain the appearance and health of the teeth.

Brush twice daily

Use fluoride toothpaste twice a day for around two minutes. Brush last thing at night and on one other occasion during the day.

Clean between the teeth

Use floss or appropriately sized interdental brushes every day to remove plaque from areas a toothbrush cannot reach.

Attend dental examinations

Regular dental examinations allow decay, gum inflammation, erosion and other problems to be identified.

Consider professional hygiene care

A professional dental hygiene appointment may help remove plaque, calculus and some external surface staining where clinically appropriate.

This is not the same as bleaching and will not change the natural internal colour of the teeth.

Reduce frequent exposure to staining products

Tea and coffee may contribute to surface staining. Avoiding tobacco is also important for both oral and general health.

Do not make major dietary restrictions solely to avoid tooth staining. Nutrition during pregnancy is more important than maintaining a particular tooth shade.

Should You Use Natural Teeth Whitening Remedies?

Homemade whitening methods are not recommended during pregnancy or at any other time without professional advice.

Avoid rubbing the teeth with:

• Lemon juice or other acids
• Activated charcoal
• Undiluted baking soda
• Salt
• Strawberries or other fruit mixtures
• Household bleaching products

Acidic remedies can soften or erode enamel, while abrasive powders may wear the surface of the teeth. A product being described as natural does not mean it is safe or effective.

How Does Morning Sickness Affect the Teeth?

Repeated vomiting can expose the teeth to stomach acid, which may temporarily soften the enamel surface.

After vomiting:

• Rinse the mouth with water
• Avoid brushing immediately
• Wait around one hour before brushing
• Continue using fluoride toothpaste
• Speak to a dentist if vomiting is frequent or the teeth become sensitive

Brushing immediately after acid exposure may increase wear of the softened enamel.

When Can Teeth Whitening Be Started?

Teeth whitening can be considered after pregnancy and breastfeeding have finished.

Before starting, the dentist should check:

• That the teeth and gums are healthy
• Whether decay or gum disease is present
• Whether the teeth are sensitive
• Whether there are crowns, veneers, fillings or implants
• The cause and type of discolouration
• Whether whitening is likely to produce an even result

Whitening only changes the colour of natural teeth. Existing crowns, veneers, bridges, implants and tooth-coloured fillings will not whiten in the same way.

Questions to Ask Your Dentist

• Should I postpone whitening until after breastfeeding?
• Are my gums healthy?
• Is the discolouration caused by surface staining or something inside the tooth?
• Would a hygiene appointment help remove surface stains?
• Do I have fillings or crowns that will not change colour?
• Which whitening method may be suitable after pregnancy?
• Could whitening make my teeth more sensitive?

How Glow Dental Can Help During Pregnancy

At Glow Dental, we recommend postponing cosmetic teeth whitening during pregnancy and breastfeeding.

Our team can still help with:

• Dental examinations during pregnancy
• Assessment of bleeding or sensitive gums
• Professional hygiene care where appropriate
• Advice on fluoride toothpaste and interdental cleaning
• Treatment of decay, pain or infection
• Planning teeth whitening after pregnancy and breastfeeding

We do not recommend home bleaching remedies, activated charcoal, fruit-based whitening mixtures or unregulated whitening kits.

Book a Dental Assessment at Glow Dental

Glow Dental provides dental care for patients during pregnancy at our practice on Northcote Road in Battersea, close to Clapham Junction.

We welcome patients from Battersea, Clapham, Wandsworth, Chelsea and surrounding areas of South West London.

During your appointment, we can assess your teeth and gums, discuss any sensitivity or staining and help you plan cosmetic whitening for a more appropriate time.

Book a dental assessment at Glow Dental.

References

• NHS. Teeth whitening. Guidance reviewed August 2025.
• Derbyshire Family Health Service. Pregnancy and oral health.