What is the best method for teeth whitening? Home teeth whitening is quite simple!

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Want to make a friendly impression on others? Displaying a bright and confident smile can score you some points in their hearts! However, upon looking in the mirror, if you notice your teeth are a bit yellow and you feel a bit awkward when smiling...

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Don't worry, you don't have to go to the dentist's office every few months for teeth whitening, and it doesn't necessarily have to cost a fortune either! Learn how to whiten your teeth inexpensively and effectively, so that yellow teeth won't catch up with you!


1、The causes of yellow teeth

Even though I brush my teeth every day, why are they still yellow?

Here are several common reasons, that everyone wants to know:

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Reason 1:Dietary habits

Food is the paramount necessity of the people. Eating and drinking are essential parts of our life, especially for office workers who often rely on a cup of coffee or tea to support their energy and focus during busy work.

After work, to relax you may go to a bar with friends or colleagues to have a glass of red wine, temporarily forgetting their troubles. However, if you consume these dark- colored beverages or foods for a long time, it can cause pigments to deposit on your teeth, causing them to turn yellow or black.

Not only the color but also rapid temperature changes can cause cracks on the surface of teeth, allowing pigments to deposit on teeth and cause discoloration.

For example, consuming cold drinks with hot dishes, which is a common habit, is one of the main reasons for the yellowing of our teeth.

Reason 2:Smoking

Everyone knows that smoking is bad for the body, and one of its side effects is yellowing teeth. Substances like nicotine and tar in cigarettes cannot dissolve in water, and prolonged smoking will deposit these substances on the surface of the teeth, causing them to turn yellow.

Reason 3:Excessive use of fluoride

In the process of cleaning teeth to improve cleanliness, you may choose to use mouthwash. However, if oral care products containing fluoride are excessively used, it may have the opposite effect of causing teeth to turn yellow or develop yellow spots.

Reason 4:Family genetics

There are four natural shades of teeth: brown, yellow, grey, and reddish-grey and most family members have similar teeth color. If the natural color of your family members' teeth is yellow, then your teeth will have a similar shade as well.

Reason 5:Drug effects

If you are taking medications such as antihistamines and antipsychotics, one of the side effects of these drugs is that they may cause teeth to turn yellow.

Additionally, if children take tetracycline antibiotics during the development of their teeth, it may affect the color of their teeth, causing them to turn greyish-blue or yellow.

Reason 6:Aging

This is a natural ageing process, as the enamel becomes thinner over time and eventually reveals the yellowish color of the dentin.

2、The pros and cons of various teeth whitening methods

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(1)Using natural ingredients to whiten teeth

Baking soda + lemon juice

Lemon juice is a natural whitening agent, but it can erode the enamel on teeth. Adding baking soda can neutralize the pH level in the oral cavity, reducing the damage to the enamel.

The method is as follows:

  1. Mix several teaspoons of baking soda and lemon juice into a paste.
  2. Apply it to the toothbrush and gently clean it as if brushing your teeth.
  3. Leave it on for 1 minute.
  4. Rinse thoroughly with warm water.

Strawberries + salt

The vitamin C and malic acid in strawberries can break down yellowish stains on teeth and remove surface stains. Mixing with salt can also have an exfoliating effect, making it a well-known teeth-whitening method in Japan.

The method is as follows:

  1. Crush 1-3 strawberries.
  2. Add a small amount of salt.
  3. Apply it to the teeth and leave it on for 5 minutes.
  4. Rinse with warm water.

If you choose to whiten your teeth naturally, be careful in selecting the materials. Additionally, the particles in baking soda are relatively large and can easily erode teeth, causing damage to the enamel protective layer, so it should not be used frequently.

 (2)Modern Methods of teeth whitening

Whitening toothpaste

Brushing teeth twice a day with whitening toothpaste can kill two birds with one stone, as it can both clean the oral cavity and whiten teeth. There are several common brands of whitening toothpaste available on the market.

The principle of whitening toothpaste is mainly to remove the pigments through calcium carbonate, so it is necessary to use it persistently for a long time to see the whitening effect on teeth.

Whitening strips

Similar to whitening toothpaste, whitening strips are whitening products that can be purchased without a prescription from a dentist. Whitening strips mainly use whitening agents such as carbamide peroxide to break down pigments on the teeth and achieve the effect of whitening teeth.

If you want to quickly whiten your teeth for an important occasion, this is a good choice. However, long-term use of whitening strips may increase tooth sensitivity, making them more sensitive to hot and cold drinks and acidic or sweet foods.

Get a whitening treatment at a clinic (such as cold light teeth whitening treatment).

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This method uses blue light or heat to accelerate the action of oxidizing agents. The whitening effect is relatively fast, and the entire process is usually supervised by a dentist. However, the side effect of teeth whitening from these treatments is that both teeth and gums may become sensitive, and the cost is relatively high.

3、Tips to maintain white teeth

After using whitening toothpaste or whitening strips for a long time, or even going to the clinic to have a whitening treatment, you may find that the effect does not last long. In that case, you need to change some of your lifestyle habits.

  1. Reduce consumption of dark-colored foods or drinks

As mentioned earlier, one of the reasons for yellow teeth is the consumption of dark-colored foods or beverages, so to maintain white teeth, it is necessary to reduce the intake of these items.

If you have to eat, use a straw or rinse your mouth with water or brush your teeth as soon as possible to reduce the chance of pigments sticking to the surface of your teeth.

  1. Eating green vegetables

Green vegetables are rich in minerals that can form a protective film on the surface of teeth, making it harder for stains to adhere. It may come as a surprise, but eating vegetables not only helps detoxify the body but also helps whiten teeth!

  1. Regular teeth cleaning

To maintain the beauty of teeth, it is necessary to have regular dental cleanings to thoroughly remove accumulated dental plaque. In addition to having a positive impact on teeth whitening, it can also maintain the cleanliness of the oral environment.

4、You can enjoy professional-level teeth whitening at home

This device can provide professional-level teeth whitening results at home without damaging the teeth!

(1)Recommended home teeth whitening machines

CM LESS MODEL SMILE AT-HOME TEETH WHITENING DEVICE KIT allows you to have model-like bright white teeth at home without having to make a special appointment with the dentist.


  • Specialized silicone teeth tray for teeth whitening
  • 2 tubes of whitening gel (10ml per tube)
  • Teeth shade guide
  • Wireless blue light teeth whitening machine
  • Battery

Using all the accessories together can effectively accelerate the whitening process in 25 minutes. Using LED blue light can enhance the effect. The whole process is painless and without stimulation, and there is no need to grind the teeth, making the removal of stubborn stains faster and more noticeable.


This at-home teeth whitening kit uses sodium bicarbonate to whiten teeth and triethanolamine to neutralize the effect, avoiding over-stimulation of teeth.

In addition, CM LESS MODEL SMILE AT-HOME TEETH WHITENING DEVICE KIT uses sodium bicarbonate to whiten teeth, while also using triethanolamine for the neutralizing effect to avoid excessive stimulation to teeth. Furthermore, the teeth whitening gel in CM LESS MODEL SMILE AT-HOME TEETH WHITENING DEVICE KIT also contains polyacrylic acid and vegetable glycerin to protect the gums and soft tissue from damage.

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The blue light teeth whitening machine in this kit also features a wireless design, allowing for use while walking around the house without any issues. Additionally, the kit comes with two CR 2450 batteries, making it ready to use right out of the box! This at-home teeth whitening kit uses sodium bicarbonate to whiten teeth and triethanolamine to neutralize the effect, avoiding over-stimulation of teeth.

(3)Instructions for use

  1. Brush your teeth first to ensure that they are clean and free of stains or debris.
  2. Install the dedicated teeth tray in the appropriate position on the home teeth whitening blue light machine.
  3. Apply the teeth whitening gel evenly on the tray, ensuring that there is enough gel to cover all teeth completely.
  4. Put on the kit with the whitening gel applied.
  5. Turn on the power of the blue light teeth whitening machine (there will be a sound prompt and blue light emitted when turned on.)
  6. Wear the blue light teeth whitening kit for about 25-35 minutes (minimum 25 minutes, and up to 35 minutes for faster results. There is no need to use it for too long.)
  7. Remove the blue light teeth tray after completion.
  8. Brush your teeth and rinse off any remaining teeth whitening gel on the dental tray with cold water.