How To Use Toothpaste For Dark Underarms? 5 Tried & Tested Methods

Dark underarms can be a source of embarrassment and self-consciousness for many individuals. If you want a simple and affordable solution to lighten your underarm skin, toothpaste might be the answer you’ve been searching for.

To help you out, I will talk about the causes of dark underarms, how toothpaste works to lighten the skin and provide step-by-step instructions on using toothpaste effectively.

How To Use Toothpaste For Dark Underarms

Causes Of Dark Underarms

Before I dive into the solution, it’s important to understand the causes of dark underarms. Dark underarms are skin areas that are thicker and darker than the rest of your skin. They usually form in skin folds like the armpits, neck, or groin. However, they can also appear anywhere on the body.

There are many possible causes of dark underarms, such as:

1. Shaving

Shaving might result in dark underarms if your armpit hair is darker than your skin tone. When you shave, the hair is merely removed from the skin’s surface. The hair follicles right below the skin’s surface are what is causing this blackness.

If a sharp razor is not used while shaving, it may also make you itch. The skin will stiffen and discolor because of the discomfort and abrasions produced by excessive shaving.

How To Use Toothpaste For Dark Underarms

If you believe that shaving is to blame for the dark appearance of your underarms, waxing is a preferable choice. The hair is removed from the roots up through the hair using wax, which hides the blackness.

2. Antiperspirants and Deodorants

Antiperspirants and deodorants undoubtedly shield the body from unpleasant odors. However, they also include chemicals that could damage the skin, darkening it.

Natural cures or using light deodorants may help reduce body odor. Rubbing baking soda beneath your arms is the most effective and widely used natural cure. The harsh chemicals included in deodorants will not be exposed as a result.

3. Accumulation Of Dead Skin Cells

Our bodies produce dead cells, which build up on the skin’s surface. This also applies to the area beneath the arms.

Another possible explanation for the darkening in the underarm region is a buildup of dead skin cells. Exfoliating the underarms is a beneficial habit to prevent the buildup of dead skin cells.

How To Use Toothpaste For Dark Underarms

4. Hyperpigmentation

Certain regions on the skin that seem darker than the surrounding skin are called hyperpigmented areas, which is a common and often innocuous condition. The pigment that gives skin its color, melanin, accumulates in excess and forms deposits on the skin, which is the cause of this.

Consult a dermatologist if you think hyperpigmentation is to blame for the darkening of your underarms and take any prescription medication as directed.

5. Friction Caused By Tight Clothes

Since the underarm region is delicate, wearing tight clothes may create friction between the fabric and your flesh. Discoloration may result from this.

Near sensitive regions, loose clothing is always preferable. It’s best to wear loose clothing, particularly after waxing the underarms.

6. Obesity

The hormone insulin, which controls your blood sugar, may cause your body to become more resistant. High insulin levels may promote the growth of skin pigment cells, darkening the skin. This is also a blood sugar disorder known as diabetes type 2.

7. Hormone Disorders

Dark underarms may also be a symptom of disorders that alter hormone levels, such as Cushing’s syndrome, polycystic ovarian syndrome, or an underactive thyroid.

8. Bacterial Infection

The greatest place for germs to live is in our underarms. Bacteria may get trapped in the underarm area as a result of excessive perspiration.

How To Use Toothpaste For Dark Underarms

The last major issue is body odor, while the bacteria Corynebacterium minutissimum is responsible for excessive perspiration. Erythrasma, a persistent infection of the deeper layers of the skin, may also result from this.

9. Acanthosis Nigricans

The medical word for thicker, darker skin patches that often appear in the armpit, groin, and neck is acanthosis nigricans. Patches of your skin that are thicker, brownish-gray, or black will appear.

These patches may appear anywhere, although they most often appear in the armpit, groin, and neck areas, as well as sometimes in other skin folds. This health issue usually indicates diabetes, obesity, or imbalanced hormone levels.

10. Medications

Several medications, including steroids and hormone therapies like the pill for birth control, may also bring on dark underarms.

11. Genetics

Some individuals have dark underarms because of the gene from their parents. People with dark or brown complexion are more likely to experience this.

How Does Toothpaste Work To Lighten Underarm Skin?

When applied topically, white toothpaste contains natural bleaching characteristics that help lighten the skin. It is important to use only white toothpaste, as colored varieties may contain chemicals or odors that can be harsh on the delicate underarm skin.

Most types of toothpaste contain abrasives that are designed to polish and clean teeth by removing plaque and dirt.

Toothpaste contains several ingredients that can help lighten underarm skin. These ingredients include:

  • Baking soda: Known for its exfoliating properties, it can help remove dead skin cells and unclog pores, leading to lighter skin.
  • Hydrogen peroxide: This ingredient has bleaching properties and can help lighten dark spots on the skin.
  • Mint or menthol: Toothpaste that contains mint or menthol can provide a cooling effect, soothing the skin and reducing inflammation.

How To Use Toothpaste For Dark Underarms?

Having dark underarms can be a common concern for many individuals, and finding effective solutions to lighten the skin in this area is often a top priority. Now that we understand how toothpaste can help lighten underarm skin let’s discuss how to use it effectively:

1. Toothpaste & Baking Soda With Lemon

When it comes to natural exfoliants that can effectively remove dead skin cells from the armpits, a combination of toothpaste, baking soda, and lemon can work wonders. Here’s how you can create this powerful remedy:


  • One lemon halved
  • Baking soda, one tablespoon
  • Water, two teaspoons
  • Toothpaste
  • One plastic spoon and a glass bowl


  1. Using a plastic spoon, combine toothpaste, two tablespoons of water, and one tablespoon of baking soda in a glass bowl.
  2. Rub the cut side of a lemon over your dark underarms for a few seconds.
  3. Apply the toothpaste mixture to your underarms and leave it on for four to six minutes.
  4. Finally, rinse it off using a standard cleanser, and don’t forget to moisturize your skin afterward.

2. Rice Powder And Baking Soda In Toothpaste

If you’re looking for a remedy that not only exfoliates your underarms but also contains skin-whitening ingredients, try incorporating rice powder into your toothpaste mixture. Here’s how you can do it:


  • Baking soda, one tablespoon
  • Rice powder, two tablespoons
  • Unflavored apple cider vinegar, two teaspoons
  • Toothpaste
  • One glass bowl and one spoon


  1. In a glass bowl, combine unflavored toothpaste, one tablespoon of baking soda, two teaspoons of rice powder, and two teaspoons of apple cider vinegar.
  2. Stir everything together well for a few minutes.
  3. Liberally apply the mixture to your dark underarms and let it dry for 4 to 7 minutes.
  4. Once dry, rinse off the combination using a cleanser.

3. Tomato Juice & Toothpaste

Tomato juice contains lycopene, which has an astringent effect that helps unclog pores and reduces skin discoloration under the arms. Here’s how you can incorporate tomato juice into your toothpaste routine:


  • Three tablespoons of tomato juice
  • White toothpaste
  • One mixing bowl


  1. Put the toothpaste and tomato juice in a mixing dish and stir them well.
  2. Apply the mixture to your dark underarms using your fingers.
  3. Wait for three to five minutes.
  4. Rinse off the combination with lukewarm water.

4. Toothpaste With Lemon Juice

Toothpaste, combined with lemon juice, can effectively whiten dark underarms while harnessing the powerful antimicrobial effects of lemon. Here’s how you can create this paste:


  • White toothpaste, one small glass bowl
  • Lemon juice, four teaspoons


  1. combine toothpaste and four tablespoons of lemon juice in a glass dish.
  2. Stir the mixture thoroughly.
  3. Smoothly apply the mixture to your underarms and allow it to rest for 5 to 7 minutes.
  4. Wash off the paste with a typical cleanser.

5. Matcha Green Tea Powder & Toothpaste

If you’re dealing with congested underarm skin, this recipe combining toothpaste and matcha green tea powder can help exfoliate and clear your pores:


  • Matcha green tea powder toothpaste, two teaspoons
  • One little spatula and a glass bowl


  1. In a small glass dish, stir together two teaspoons of matcha green tea powder and toothpaste.
  2. Gently apply the paste to your underarms and let it sit for 5-7 minutes.
  3. Wipe away the paste with plenty of water and follow up with a moisturizer.

How Long Does Toothpaste Take To Lighten Underarms?

Many individuals see an improvement in just a few days, typically within 3-7 days. However, it’s important to note that the timing may vary based on factors such as the current condition of your skin, the intensity of darkness, and the underlying cause of discoloration.

Furthermore, it’s crucial to consider your body’s unique response to the treatment. Results may differ from person to person. Consistency is key when it comes to any treatment, so make sure to maintain a regular routine for optimal effectiveness. Here is full details information on How To Use Toothpaste For Dark Underarms?

Side Effects Of Using Toothpaste On Your Underarms

Toothpaste can be used as a home remedy to lighten dark underarms. Toothpaste contains fluoride and other ingredients that have bleaching properties and can remove dead skin cells and bacteria.

However, toothpaste is not designed for skin application and may cause irritation, especially if you have sensitive skin or wounds. Toothpaste may also contain toxic chemicals that can be absorbed through the skin and affect your health. Some of the possible side effects of using toothpaste on your underarms are:

  • Burning sensation
  • Redness
  • Dryness
  • Peeling
  • Rash
  • Allergic reaction
  • Infection

Precautionary Measures When Using Toothpaste On Your Underarms

While using toothpaste on your underarms might seem harmless, taking certain precautions is crucial to ensure your safety and well-being. Here are some important points to keep in mind:

1. Patch Test

Before applying toothpaste to your underarms, it’s crucial to perform a patch test on a small area of your skin. This will help you determine if you are allergic or sensitive to any of the ingredients present in the toothpaste.

Apply a small amount of toothpaste on the inside of your arm and wait for 24 hours. If you experience any redness, irritation, or itching, it is advisable to avoid using toothpaste on your underarms.

2. Choose The Right Toothpaste

Not all toothpaste is created equal, and some may contain ingredients that can be harsh on the delicate skin of your underarms.

Opt for a toothpaste that is free from potential irritants such as fragrances, artificial colors, and abrasive particles. Look for mild and gentle toothpaste to minimize the risk of skin irritation.

3. Cleanse Thoroughly

Before applying toothpaste to your underarms, make sure to cleanse the area properly with a mild soap or body wash. This will help remove any dirt, sweat, or bacteria, allowing the toothpaste to work effectively.

4. Avoid Broken Or Irritated Skin

 If you have any cuts, wounds, or skin irritations in your underarm area, it is best to avoid using toothpaste.

Toothpaste contains ingredients like menthol and baking soda, which can cause further irritation and discomfort on broken or irritated skin.

Natural Treatments For Dark Underarms

You might feel embarrassed to wear sleeveless tops or raise your arms in public if you have dark underarms. But don’t worry. There are natural ways to lighten your underarms and restore your self-esteem.

I will share with you some tried and tested methods to help you achieve brighter and more even-toned underarms.


When it comes to underarm whitening, many individuals opt for natural methods. One such method that has gained popularity is the use of potatoes. This humble vegetable contains natural bleaching properties that can help lighten dark underarms.

To harness its benefits, simply grate one potato and extract its juice. Apply this juice to the underarms, ensuring complete coverage. After letting it sit for ten minutes, rinse the area with cold water. Repeat this process regularly for optimal results.

Orange Peel, Milk, And Rosewater

Another effective natural remedy for dark underarms involves the use of orange peel, milk, and rosewater. To create a thick paste, combine one tablespoon of rose water, one tablespoon of milk, and enough grounded orange peel.

Apply this paste to your underarms and gently scrub the area. After approximately 15 minutes, rinse it off using cold water. For best results, repeat this process 2 to 3 times a week.


Lemons are known for their natural bleaching properties, making them an excellent choice for underarm lighting. Simply slice a lemon into thick slices and apply them directly onto your underarms.

Allow the lemon juice to work its magic for 10 minutes, then wash, dry, and moisturize your armpits with cold water. Incorporating this routine into your skin care regimen will gradually help lighten your underarms.

Lemon And Turmeric

You can create a paste using fresh lemon juice and turmeric for a more potent underarm lightening treatment.

Mix enough turmeric and two teaspoons of lemon juice to form a paste. Now, apply this paste uniformly to your armpits and let it sit for 30 minutes.

Afterward, wash off the paste and revel in the rejuvenating effects. Regular use of this paste will contribute to visibly lighter underarms.

Egg Yolk Oil

Apply egg yolk oil over your underarms just before bedtime. Allow it to work its magic overnight. Wash your underarms with a pH-balanced body wash or soap the next morning.

This treatment helps lighten the underarm area and nourishes the skin, leaving it supple and smooth.

Coconut Oil

Apply a few drops of coconut oil to your underarms and massage them. Afterward, rinse your armpits with warm water and mild soap.

Continue this process 2 to 3 times a week for maximum benefit. Your underarms will thank you for this pampering session.

Tea Tree Oil

Tea tree oil, known for its antibacterial properties, can also aid in underarm lightening. Mix eight ounces of water with five drops of tea tree oil in a spray bottle. Apply the mixture to your underarms daily after drying off from a bath or shower.

Allow it to air dry naturally. This refreshing spray will not only contribute to lightening your underarms but also keep them fresh and odor-free.


Now that I have talked about how to use toothpaste for dark underarms let us answer some questions regarding the matter:

What’s The Fastest Way To Lighten Dark Underarms?

Create a paste by combining baking soda and water, then apply it to your underarms. Leave it on for 10 to 15 minutes before rinsing it off. This exfoliating method can help remove dead skin cells that contribute to discoloration.

Does Salt Lighten Underarms?

You can naturally lighten your underarms by putting lemon juice and salt on them. Begin by massaging fresh lemons onto the underarm area.

Then, mix with a little water to create a light paste, and add a sufficient amount of table or sea salt (which acts as a natural exfoliant). Apply this mixture to your underarms to lighten them.

Are Dark Armpits Unhealthy?

While dark underarms are typically not a cause for alarm, individuals with this issue need to consult their doctor.

Skin darkening can sometimes be a sign of an untreated medical condition. Treating the underlying issue often leads to symptom relief and lighter skin.


Toothpaste, with its whitening properties, can be a convenient and affordable solution for dark underarms. However, it’s important to be mindful of potential side effects and take preventive measures when using toothpaste on your underarms.

Remember, consistency is key when using toothpaste for dark underarms. Incorporate this method into your skincare routine and monitor the results over time. If you experience any adverse reactions, discontinue use and consult a dermatologist. Alternatively, you can try the aforementioned natural remedies.

Also read:-Should I Keep My Electric Toothbrush On The Charger? A Comprehensive Guide

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