Hydrogen Peroxide Teeth Whitening: Safe and Effective to Whiten Teeth?


  • Ways to Tell If You Need Teeth Whitening
  • What Stains The Teeth?
  • Methods of Teeth Whitening
  • Importance and Benefits of Teeth Whitening
  • Uses of Hydrogen Peroxide
  • Hydrogen Peroxide Concentrations Available In Stores
  • The science behind what makes teeth turn yellow, and how hydrogen peroxide works to reverse this process
  • How to Whiten Teeth Using Hydrogen Peroxide
  • How Long Does Hydrogen Peroxide Teeth Whitening Last?
  • How to get the best results from hydrogen peroxide teeth whitening
  • Dangers of Hydrogen Peroxide
crest beautiful smiles

There is a lot of debate around the use of hydrogen peroxide for teeth whitening. Some people swear by its effectiveness, while others claim that it can be dangerous. So, what’s the truth? Is hydrogen peroxide safe and effective for teeth whitening?

Hydrogen peroxide is a whitening agent and for which reason it is used by dentists during teeth whitening procedures. It is the primary active agent in whitening strips and gels. Hydrogen peroxide is effective for teeth whitening as it breaks down the discoloration and staining on the teeth. It also helps to remove plaque and bacteria from the teeth, leaving them clean and white.

However, hydrogen peroxide can also be dangerous if not used correctly. It is this part that is responsible for the severe restrictions on its use all over Europe. It can cause gum damage and tooth sensitivity if used in high concentrations or over a long period of time. It is therefore to correctly understand its use and to heed the warnings on the label.

Ways to Tell If You Need Teeth Whitening

With all the various options available to you for teeth whitening, how can you tell you need teeth whitening in the first place?

There are many ways to tell if you need teeth whitening. The easiest way is to look in a mirror and compare your teeth to someone else’s. If your teeth are more yellow or stained than the other person’s, then you may need teeth whitening. You can also try using a home teeth whitening kit to test how effective it is on your own teeth. If the kit removes some of the stains on your teeth, then you probably need professional teeth whitening.

Some other signs that you may need teeth whitening are if your teeth are sensitive to hot and cold drinks or foods, if you have plaque build-up on your teeth, or if you have cavities. If you notice any of these problems, it’s a good idea to visit your dentist to see if teeth whitening is an option for you.

Teeth whitening is a safe and effective way to improve the appearance of your teeth. There are many different types of teeth whitening treatments available, so be sure to talk to your dentist about what would be best for you. Teeth whitening can help remove years of built-up stains and make your teeth look brighter and healthier.

What Stains The Teeth?

The natural colour of teeth is generally a light yellow, but it can vary depending on a person’s age, diet, and genetics. There are many things that can cause teeth to become stained, including:

  • Tobacco use
  • Drinking coffee, tea, or red wine
  • Eating dark-colored fruits and vegetables
  • Taking certain medications
  • Smoking
  • Energetic drinks, Carbonated drinks -these make the teeth more susceptible to staining and cavities.
  • Candy
  • Citrus fruits and berries, including blackberries, strawberries and raspberries
  • Tomato-based sauces

The list can go on and on. These cause teeth staining because of the chromogens they contain. Chromogens are natural or artificial compounds that give color to foods, beverages, and other substances. Some common chromogens found in teeth-staining items are:

  • Anthocyanins – These are present in red and blue fruits and vegetables.
  • Carotenoids – These are present in yellow and orange fruits and vegetables.
  • Tannins – These are found in tea, red wine, and coffee.

The staining occurs by the chromogens attaching to the tooth surface. Once they are attached, it becomes difficult to remove them just by brushing and flossing. This is where hydrogen peroxide teeth whitening comes in.

Whitening toothpastes are available over-the-counter and can be used at home. They work by using abrasives to scrub off the chromogens that have attached to the tooth surface. The other methods of teeth whitening are all towards more effectively removing these chromogens.

Methods of Teeth Whitening

There are several methods of teeth whitening, from home remedies, to use of dental products and dental procedures. However, of course, the various means also have varying levels of effectiveness.

Some of the most common methods of teeth whitening are as follows:

Home Remedies for Tooth Whitening

There are many home remedies that can be used to whiten teeth. These include

  • using lemon juice
  • paste made from the combination of baking soda and hydrogen peroxide.

However, it is important to note that these methods can often be quite abrasive and can damage teeth if not used correctly.

Dental Teeth Whitening Kits

There are a number of dental products available that can be used to whiten teeth. These include

  • whitening toothpastes
  • over-the-counter bleaching kits
  • whitening strips
  • whitening trays
  • bleaching agents.

One of the most popular dental whitening products is hydrogen peroxide. Hydrogen peroxide is a bleaching agent that is effective at removing stains from teeth. It is available in both over-the-counter and prescription strengths.

Dental Procedures

Some people may choose to have dental procedures performed in order to achieve whiter teeth. Teeth whitening treatments done in a dental office use stronger bleaching agents than those available over the counter. They also involve the use of lasers or other special equipment that helps to activate the bleaching agents. This combination of stronger bleaching agents and activated equipment can produce impressive results in a relatively short period of time.

Procedures that can be used to achieve this include

  • teeth whitening procedures such as Zoom teeth whitening, Kor teeth whitening, and Boost teeth whitening
  • laser teeth whitening
  • dental veneers
  • dental implants

Teeth whitening is a popular procedure that uses a bleaching agent such as high concentration hydrogen peroxide gels to remove stains from teeth. Dental veneers are thin shells of porcelain that are bonded to the front of teeth to cover up any discoloration or irregularities. Dental implants are replacement teeth that are implanted directly into the jawbone.


Before & After Teeth Whitening - competition time

Importance and Benefits of Teeth Whitening

Given the explanation on why teeth stain, what causes the staining and the various means of removing these stains, we now turn to list out he various benefits and importance of teeth whitening.


  • One of the most obvious benefits of teeth whitening is that it can make teeth look up to several shades lighter. This can give an individual a more youthful appearance and also make them appear more attractive.
  • Teeth whitening is also one of the most affordable ways to improve the appearance of your smile. This can also help to boost self-confidence, as people feel better about themselves when their smile looks brighter and more attractive.
  • When teeth are whiter, they are less likely to show signs of tooth decay and other dental problems. This is because the bacteria that cause tooth decay and other problems thrive in areas that are dark and stained. By lightening your teeth, you can make these areas less hospitable for bacteria and help to keep your smile healthy.

It is because of the far-reaching impact of teeth whitening that this cosmetic treatment has become so popular over the years. With more and more people looking for ways to improve their appearance, teeth whitening is a treatment that can provide noticeable results relatively quickly and without too much expense. In short, teeth whitening is an affordable and effective way to achieve a brighter smile.

What is Hydrogen Peroxide?

Hydrogen peroxide is a chemical compound that is made up of two hydrogen atoms and two oxygen atoms. The chemical formula for hydrogen peroxide is H2O2. It is a pale-yellow liquid that is slightly more viscous than water. Hydrogen peroxide is a powerful oxidising agent, meaning that it can cause chemical reactions by breaking down other molecules. This makes it a valuable ingredient in many commercial and household products.

Hydrogen peroxide is manufactured to pharmaceutical grade standards, meaning that it is safe for human use. It can also be manufactured to lower grade standards such as cosmetic grade. The lower grades of hydrogen peroxide are not necessarily safe for human use, and may even be harmful. These grades are primarily for use in cosmetic products.

Hydrogen peroxide is an effective teeth whitener. It works by breaking down the chromophores in the tooth enamel. This releases the stain molecules and makes them more visible. The hydrogen peroxide then oxidises these molecules and removes them from the tooth surface.


Uses of Hydrogen Peroxide

Hydrogen peroxide is used in a variety of applications, including:

  • Teeth whitening
  • Disinfecting wounds
  • Cleaning contact lenses
  • Preventing swimming pool algae growth
  • Removing stains from laundry
  • Killing bacteria in food
  • Fading hair color
  • Preventing gum disease
  • Treating acne

The most common use of hydrogen peroxide is as a teeth whitener. It is an effective and safe way to remove stains from the teeth. Hydrogen peroxide can also be used to disinfect wounds and prevent the growth of algae in swimming pools. It can also be used to remove stains from laundry and kill bacteria in food. In addition, hydrogen peroxide can be used to fade hair color and treat acne.

There are many commercial and household products that contain hydrogen peroxide. Some of these products include:

  • Toothpaste
  • Mouthwash
  • Deodorant
  • Disinfectant wipes
  • Laundry detergent
  • Window cleaner
  • Algaecide
  • Hair color
  • Acne treatment

When using hydrogen peroxide as a teeth whitener, it is important to follow the manufacturer’s instructions. It is also important to avoid contact with the eyes and other sensitive areas. Hydrogen peroxide can cause irritation and burning if it comes into contact with these areas. In addition, it is important to keep hydrogen peroxide out of reach of children.


Hydrogen Peroxide Concentrations Available In Stores

Hydrogen peroxide can typical be found in stores such as pharmacist, hardware store, and supermarkets. The following are the concentrations typically sold:

  • 3% hydrogen peroxide content
  • 6% hydrogen peroxide content, sold for use as a teeth whitener
  • 10% hydrogen peroxide content, sold for use as a teeth whitener
  • 30% hydrogen peroxide content, sold for industrial or agricultural use, as disinfectant, or as a bleaching agent

It is important to note that the higher the concentration, the greater the potential for causing harm. So, it is important to keep hydrogen peroxide out of reach of children. The most common concentration found in stores is the 3% hydrogen peroxide. The 3% hydrogen peroxide concentration is generally considered safe for home use, but it is important to follow the manufacturer’s instructions. The 6% and 10% hydrogen peroxide concentrations are usually only used by a dentist or under a dentist’s supervision.


The science behind what makes teeth turn yellow, and how hydrogen peroxide works to reverse this process

Hydrogen peroxide is used as a teeth whitener because it is an effective oxidising agent. When it comes in contact with the enamel on your teeth, it breaks down the pigment that causes them to appear yellow or stained. This process is known as oxidation. This weakens the bonds between these compounds and the tooth enamel, which makes them easier to remove. By breaking down these compounds, hydrogen peroxide also helps to remove plaque and bacteria from the teeth.

How to make 3% hydrogen peroxide at home for teeth whitening

We will provide this details for demonstration only. We have an extensive line of products that effectively whiten teeth and do not recommend direct application of hydrogen peroxide solutions.

To make 3% hydrogen peroxide at home, you will need:

  • Distilled water
  • 3% hydrogen peroxide solution
  • A small funnel
  • A glass jar or bottle with a lid


  1. Pour 1 cup of distilled water into a glass jar or bottle.
  2. Add 3 tablespoons of 3% hydrogen peroxide solution.
  3. Use the funnel to carefully pour the hydrogen peroxide mixture into the glass jar or bottle.
  4. Cap the container and shake it well to combine the ingredients.
  5. Store the hydrogen peroxide in a cool, dark place. Shake it before each use.

How to Whiten Teeth Using Hydrogen Peroxide

We have highlighted above the various methods of teeth whitening. Practically all methods use hydrogen peroxide in some form or the other.

Hydrogen Peroxide Use in Home-Made Remedies for Teeth Whitening

There are a few ways to use hydrogen peroxide in home-made remedies for teeth whitening. You can either brush it onto your teeth directly, or soak them in a hydrogen peroxide solution.

  1. To brush your teeth with hydrogen peroxide, mix equal parts of hydrogen peroxide and water. Dip your toothbrush into the mixture and brush your teeth like you normally would. Be sure to spit out the hydrogen peroxide after brushing.
  2. To soak your teeth in a hydrogen peroxide solution, mix 1 part hydrogen peroxide with 2 parts water. Pour the solution into a glass or plastic cup. Soak your teeth in the solution for about 5 minutes, then spit it out. Rinse your mouth with water afterwards.
  3. You can also use a combination of both methods. Brush your teeth with the hydrogen peroxide mixture, then soak them in the hydrogen peroxide solution for a few minutes.

Whichever method you choose, be sure to rinse your mouth with water afterwards.

Peroxide Use in Dental Teeth Whitening Products

The use of hydrogen peroxide in dental teeth whitening products is a common and effective method for lightening teeth. Hydrogen peroxide is a bleaching agent that works by breaking down the stains on your teeth. It is available in both over-the-counter and prescription strength forms.

Whitening toothpastes typically contain a small amount of hydrogen peroxide. This is what makes toothpastes effective at removing surface stains.

Over-the-counter bleaching kits are also available and typically contain a higher percentage of hydrogen peroxide. Some prescription strength bleaching products also contain hydrogen peroxide.

Whitening strips, like Crest Whitestrips, enjoy their popularity because of their effectiveness that is directly tied to their hydrogen peroxide concentration.

Whitening gels, pastes and strips all work in a similar way by breaking down the particles that are responsible for staining teeth. The hydrogen peroxide present in these products helps to speed up this process.

Whitening trays are known to be effective also because of their high hydrogen peroxide concentration.

Bleaching agents for teeth whitening contain either hydrogen peroxide or carbamide peroxide. Carbamide peroxide is a combination of hydrogen peroxide and urea. When these products are used, the hydrogen peroxide is converted into water and oxygen.

The concentration of hydrogen peroxide in over-the-counter whitening products varies from 3% to 16%. Prescription bleaching products can have a concentration of up to 38%.

When it comes to finding a safe and effective way to achieve brighter teeth, hydrogen peroxide is one of the most popular ingredients.

Peroxide Use in Dental Procedures

The use of hydrogen peroxide in dental procedures goes back many years. It was first used as a bleaching agent to lighten teeth in the early 1800s.

Today, it is still used for this purpose, but it is also used to disinfect teeth and gums, remove debris and plaque, and reduce inflammation. In some cases, it is even used to treat gum disease.

The main benefit of hydrogen peroxide is that it is a strong bleaching agent. This means that it can lighten teeth quickly and safely. It also has anti-inflammatory properties, which can help to reduce inflammation and irritation in the mouth.

The teeth whitening procedures such as Zoom teeth whitening, Kor teeth whitening, and Boost teeth whitening involve the use of hydrogen peroxide. Zoom teeth whitening entails the use of up to 35% hydrogen peroxide gel, while Kor teeth whitening and Boost teeth whitening involve the use about 6% hydrogen peroxide gel.

The concentration of hydrogen peroxide used in these procedures is lower than the concentration that is typically used for hair bleaching. This means that it is safe to use and does not cause any damage to the teeth or gums. In fact, it has been found to be effective and safe for use in teeth whitening procedures.

Some people may be concerned about the safety of using hydrogen peroxide on the teeth. However, it should be noted that this chemical has been extensively studied and found to be safe for use in both short-term and long-term applications.

Laser teeth whitening is a popular teeth whitening procedure. This treatment uses a laser to activate the hydrogen peroxide gel and help it to remove the stain from the teeth. Many people choose to have their teeth whitened using laser teeth whitening because it is a fairly quick and easy procedure. It can be completed in just one visit to the dentist’s office. In addition, laser teeth whitening is considered to be one of the most effective methods of teeth whitening. It can achieve dramatic results in a short amount of time.


How Long Does Hydrogen Peroxide Teeth Whitening Last?

The results of hydrogen peroxide teeth whitening will vary from person to person and depends on which whitening treatment involving hydrogen peroxide is used. Typically, the teeth will become whiter after the first treatment, but the full results may not be seen until after subsequent treatments. The teeth will stay white for a number of months, but eventually they will start to become yellow again.

Most people find that they need to have a touch-up treatment every six to twelve months in order to maintain their white teeth.


How to get the best results when using peroxide to whiten teeth

There is no single answer to this question as it depends on the type of teeth whitening procedure or product utilized. Each will have instructions for effectiveness before, during and after treatment.

The amount of time that the bleaching agent is left in contact with the teeth also affects how white they will become. Some at-home teeth whitening products recommend leaving the bleaching agent in contact with the teeth for 30 minutes.

Dentists are well trained to follow the required procedure for teeth whitening and as such will normally achieve professional-level teeth whitening the corresponding procedure guarantees. For dental products, achieving the required effectiveness requires diligently following the instructions on the package.

Dangers of Hydrogen Peroxide

The question is always asked: are there any risks associated with hydrogen peroxide teeth whitening?

There are a few side effects that can occur when using hydrogen peroxide as a teeth whitener. These side effects include:

  • Tooth sensitivity (to hot and cold)
  • Gum irritation
  • Bleeding gums
  • Teeth pain

Tooth Sensitivity

This is the most common side effect of hydrogen peroxide teeth whitening. This occurs because the hydrogen peroxide penetrates the enamel and bleaches the dentin, which is the layer of tooth just below the enamel. The bleaching process can make teeth more sensitive to hot and cold temperatures.

Gum Irritation

This is also a common side effect of hydrogen peroxide teeth whitening. This occurs when the hydrogen peroxide comes into contact with the gums and causes them to become inflamed.

Bleeding Gums

This is another side effect of hydrogen peroxide teeth whitening that can occur when the whitener comes into contact with the gums.

Teeth Pain

Teeth pain is also a potential side effect of using hydrogen peroxide for teeth whitening. This occurs when the hydrogen peroxide causes the teeth to become more sensitive.

Despite these potential side effects, hydrogen peroxide is an effective and safe way to achieve brighter teeth. By following the instructions provided by your dentist or the manufacturer of teeth whitening home-use products, you can minimize your risk of experiencing any negative side effects. And if you do experience any side effects, they are likely to be only temporary. It is important to know this in order to make an informed decision about whether or not hydrogen peroxide teeth whitening is the right choice for you.



Despite the dangers associated with hydrogen peroxide teeth whitening, it is still one of the most popular and effective ways to achieve brighter teeth. With careful use, it can be an affordable and relatively safe way to achieve a whiter smile. For those looking for an alternative to bleaching treatments or laser procedures, hydrogen peroxide may be the perfect solution.

So, is hydrogen peroxide teeth whitening safe and effective? The answer is yes – it can be both safe and effective if done correctly. However, it’s important to note that hydrogen peroxide can also damage your teeth if used incorrectly. Hydrogen peroxide is a powerful agent and should not be used indiscriminately. When used correctly, however, it can provide a safe and efficient means of teeth whitening.

If you’re considering hydrogen peroxide teeth whitening, be sure to consult with your dentist first. They can help you to determine if this is the right treatment for you and can provide guidance on how to use hydrogen peroxide safely and effectively.



  1. Tooth Whiteners & Oral Hygiene Products Containing Hydrogen Peroxide https://ec.europa.eu/health/scientific_committees/opinions_layman/en/tooth-whiteners/index.htm
  2. M. Sulieman, M. Addy, E. MacDonald, J.S. Rees, The effect of hydrogen peroxide concentration on the outcome of tooth whitening: an in vitro study, Journal of Dentistry, Volume 32, Issue 4, 2004, Pages 295-299, ISSN 0300-5712, https://doi.org/10.1016/j.jdent.2004.01.003.(https://www.sciencedirect.com/science/article/pii/S0300571204000119)
  3. RT Basting; FLB Amaral; FMG França; FM Flório, Clinical Comparative Study of the Effectiveness of and Tooth Sensitivity to 10% and 20% Carbamide Peroxide Home-use and 35% and 38% Hydrogen Peroxide In-office Bleaching Materials Containing Desensitizing Agents, Operative Dentistry Volume 37, Issue 5 September/October 2012, Oper Dent (2012) 37 (5): 464–473. https://doi.org/10.2341/11-337-C. https://meridian.allenpress.com/operative-dentistry/article/37/5/464/206268/Clinical-Comparative-Study-of-the-Effectiveness-of
  4. Zekonis R, Matis BA, Cochran MA, Al Shetri SE, Eckert GJ, Carlson TJ. Clinical evaluation of in-office and at-home bleaching treatments. Oper Dent. 2003 Mar-Apr;28(2):114-21. PMID: 12670065. https://pubmed.ncbi.nlm.nih.gov/12670065/
  5. Tredwin, C., Naik, S., Lewis, N. et al. Hydrogen peroxide tooth-whitening (bleaching) products: Review of adverse effects and safety issues. Br Dent J 200, 371–376 (2006). https://doi.org/10.1038/sj.bdj.4813423. https://www.nature.com/articles/4813423