Toothpaste For Dark Underarms – Ultimate DIY Guide

Toothpaste For Dark Underarms - Ultimate DIY Guide
Toothpaste For Dark Underarms – Ultimate DIY Guide

I know what you’re thinking. Toothpaste for dark underarms? What on earth? 

But, so many people seem to be jumping on this trend. 

So in this article, we are going to investigate and see what this trend is all about and whether it really works. 

Can You Use Toothpaste For Dark Underarms

Yes, you can use white toothpaste on your underarms to lighten them. 

However, like with all home remedies and DIYs, there are precautions to take and certain tips to follow for the best results. 

Remember that your underarm is very sensitive, too. So, you should be careful with what you are putting on that area of your skin. 

Related Article: DIY & Medical Ways to Quickly Whiten Underarms Permanently

How Does Toothpaste Work To Lighten Dark Underarms

White toothpaste has natural bleaching properties that lighten the skin when applied. 

It is important to only use white toothpaste as the colored ones may have chemicals or fragrances that could irritate the sensitive skin of the underarms. 

Most kinds of toothpaste contain abrasives that clean and polish teeth by removing debris and plaque. Some also contain baking soda, which has bleaching properties that clean the teeth.

This is the same concept for the skin. The abrasives and/or baking soda exfoliate the skin, removing dead cells, debris, and bacteria. 

Related Article: How to Exfoliate Armpits – 6 Best DIY Easy Natural Scrubs

Now for some great deodorants that can actually help to lighten dark armpits check out:

5 Best Deodorants to Lighten Dark Underarms- Prevent & Treat

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How Long Does It Take To Lighten Underarms With Toothpaste

Many people have reported seeing a visible difference in a matter of days (3-7 days). 

However, this will vary depending on:

  • The condition of your skin
  • The severity of the darkness
  • The underlying cause (if any)
  • Your skin’s reaction

Some people may see results later than others. And, like all remedies, consistency is key. 

How Often to Exfoliate or Scrub Underarms for Best Results

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How To Use Toothpaste To Lighten Dark Underarms (Best DIYs)

Toothpaste can be applied to the skin of the underarms alone or mixed with other ingredients.

1- Toothpaste For Dark Underarms

If you are using toothpaste only, you should:

  • Clean your underarms gently to remove underarm products
  • Apply the toothpaste
  • Let it sit for 5-10 minutes
  • Rinse off with water
  • Moisturize

However, here are some other great DIY recipes with toothpaste that would be more effective that you can try:

2- Toothpaste & Baking Soda


  • One Tablespoon of Baking Soda
  • Unflavored Toothpaste
  • One Glass Bowl
  • One Spoon


  1. Add one tablespoon of baking soda and some of the unflavored toothpaste into a glass bowl. 
  2. Mix them well using a spoon for a few minutes.
  3. Apply it generously to your underarms and let it dry for 4-7 minutes.
  4. Once it’s done, clean this mixture using a cleanser.
  5. Repeat daily or 2-3 times per week (depending on the sensitivity of your skin)

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3- Toothpaste & Lemon Juice


  • 4 Teaspoons of Lemon Juice
  • White Toothpaste


  1. Add a few teaspoons of lemon juice with toothpaste into a glass bowl and mix them well.
  2. Rub the paste on your underarms and leave it for 5-7 minutes.
  3. Wash it off with a regular cleanser.
  4. Do this daily or if you have sensitive skin 2-3 times per week

Lemon has an extra exfoliating effect and also is rich in vitamin C and citric acid which are also whitening agents.

Baking Soda & Lemon for Underarms: How to DIY & Benefits

4- Toothpaste & Tomato Juice


  • Three Teaspoons of Tomato Juice
  • White Toothpaste


  1. Pour the tomato juice along with toothpaste into a mixing bowl and combine them well.
  2. Use it liberally on the dark armpits with the help of your fingertips. 
  3. Leave it for 3-5 minutes. 
  4. Rinse this mixture with lots of lukewarm water.
  5. Repeat daily or 2-3 times per week (depending on your skin’s sensitivity).

Tomatoes contain Vitamin C, potassium and antioxidant all of which promotes healthier skin.

DIY Apple Cider Vinegar for Cleaner & Lighter Armpits

5- Toothpaste & Match Green Powder


  • Two Teaspoons of Matcha Green Tea Powder
  • Toothpaste
  • One Small Spatula


  1. Mix two teaspoons of matcha green tea powder and toothpaste into a small glass bowl for a few seconds.
  2. Apply this paste tenderly to your underarms and leave it for 5-7 minutes. 
  3. Wipe it off using lots of water and apply skin moisturizer afterward.
  4. Repeat daily or 2-3 times per week (depending on your skin’s sensitivity). 

Matcha Green Tea contains compounds such as Vitamin A, K & C, and antioxidants which promotes healthier skin development.

Related Articles –

Kojic Acid for Dark Underarms- How to Use Correctly & Risks

Aloe Vera for Underarms: Benefits & How to Use Effectively

How Often Should You Use Toothpaste to Lighten Underarms

For best results and to prevent irritation, you can use toothpaste remedies around three times each week.

For quicker results click here to learn more about Laser Whitening for Underarms: Cost, Risks, How Fast is it

Helpful Tips To Follow When Using Toothpaste For Dark Underarms

  • Use enough toothpaste for the above mentioned DIY solutions to get the proper paste consistency.
  • To prevent any skin sensitivity, always use toothpaste that is simple, white, and has less fluoride.
  • If you have any cuts, wounds, or skin conditions beneath your arms, stay away from the remedies mentioned above.
  • Always do a patch test on any region of your body before using any of the suggested remedies, especially since the skin in your armpits is extremely fragile.

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