Reasons Why Your Armpits Stink & How to Fix It | ARM & HAMMER (2024)

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What Do My Armpits Stink All of a Sudden

Why do armpits smell, in the first place? In the simplest sense, stink happens when sweat encounters bacteria on the skin.

Now, sweating is inherently healthy. It helps to maintain your body’s internal temperature. Additionally, the amount you sweat doesn’t equate to the power of your body odor. Still, sweating can lead to stench.

Your skin contains eccrine and apocrine sweat glands. The latter open into hair follicles and can be found in the armpits. When sweat comes in contact with bacteria, a smell is produced. Sometimes that smell is less-than-desirable. Considering you have millions of sweat glands on your skin, it makes sense that you may occasionally experience stinky odor.

Additionally, everyone has a different microbiome—a diverse colony of microorganisms, including bacteria, that live on your body and work with the immune system to fight microbes. No matter your gender, hormonal changes and fluctuations in levels throughout a given day, month, or year can affect how much you sweat and the aromas you give off.

So, that’s the basis for explaining why your armpits might smell. Here are some other questions about body odors:

  • “Can lack of sleep impact body odor?” Yes, things like stress and anxiety can contribute to odorous aromas. And if you are sleeping, night sweats (more common in pregnancy, menopause and men with low testosterone) might also result in smell.
  • “Why do I smell after a night of drinking?” Aside from increasing the propensity to sweat, alcohol and other food and drink can occasionally contribute to stink. We’ll dive deeper into how a balanced diet can help reduce foul odors below.
  • “Was I born this way?” Maybe. Genetics play a role in body odor. Variants in the ABCC11 gene cause odor differentiation, and some individuals are practically devoid of body odor. Regardless of your composition, you can take actionable steps to help mitigate smelliness.

  • Women Aren’t Excluded from Odorous Armpits

    Reasons Why Your Armpits Stink & How to Fix It | ARM & HAMMER (1)

    In general, persons assigned male at birth have more apocrine glands, which explains why they are more susceptible to smelly armpits and general body odors. However, women also deal with armpit bacteria. Not all these bacteria are bad. But your unique microbiome can manifest bacteria that, when engaged with sweat, results in smelly underarms.

    The number of sweat glands isn’t the only factor in body odor. Remember, hormonal changes—including those stemming from a rise in stress and or anxiety—can contribute to stinky armpits. Menopause can also lead to a change in an individual’s typical scent.


    Why Do I Still Smell After a Shower?

    It feels good to refresh in the shower after a long workout, doesn’t it? Feeling like you’re still sweaty or stinky after cleaning up ... not as much. Fear not. Sweating after a shower is far from unusual.

    Typically, steam and water vapor from taking a shower result in a more humid bathroom. Moreover, hot water still on the body keeps warming the skin after a shower, which can give rise to additional sweatiness. If you still smell after taking a shower, you might not be thorough enough in your cleansing methods. Perhaps you forgot to wash your armpits or other sensitive areas entirely. Antibacterial soaps and scrubs can also help.

    In order to help avoid sweating after showering, try some of the following strategies:

    • Wait 20-30 minutes after a workout before lathering up.
    • Slowly lower the water temperature before you finish your shower.
    • Douse your hair in cold water at the start of your shower to jumpstart the process of cooling down.

    Ogres Might Be Like Onions… But Why Do Human Underarms Smell Like Them?

    If you’ve seen the film Shrek, you might recall the scene in which the famously ill-mannered ogre likens himself to an onion with many layers that need to be peeled back to reveal his true self. Simultaneously, you might wonder: “OK, but why in the world do my armpits smell like onions?”

    Do not be alarmed. This is perfectly natural, even if it “stinks.”

    When the sweat from your glands meets the bacteria on your skin, it breaks down into products called thioalcohols. The thioalcohols give off a strong, often sulfurous scent that can also be comparable to onions or meat. Genetics plays a role in how many thioalcohols your body produces. Just like onions, some people have a more pungent smell than others.

    Save your tears for the cutting board. Fight back against thioalcohols and onion smell with antiperspirant or deodorant.

    Can Sweat Result in Persistent Stink Even After Using Deodorant?

    Reasons Why Your Armpits Stink & How to Fix It | ARM & HAMMER (2)

    It certainly can. ARM & HAMMER™ has both scented and unscented deodorant products that help prevent stinky armpits by using Baking Soda to neutralize odors. However, unlike antiperspirant, deodorant does not block sweat. Thus, the potential mingling of sweat and bacteria might lead to unexpected odors even after deodorant has been applied.

    People sometimes use these two terms interchangeably, but there are differences in using antiperspirant vs. deodorant.

    Excessive Sweating? Try an Antiperspirant!

    Antiperspirants have aluminum salts that block skin pores to help stop sweat from reaching the surface. They are also an option for combatting hyperhidrosis, a condition that causes excessive sweating.

    Indeed, even people with hyperhidrosis should still have antiperspirant in their toolbox before resorting to surgery or other remedies. ARM & HAMMER™ has scented and unscented antiperspirants that can help limit sweat and stink, including ULTRAMAX™ Solid Antiperspirant Deodorant, Fresh Scent.

    Eating Healthy: How a Balanced Diet can Help Prevent Stinky Armpits

    Be aware that sulfur-rich foods can sneakily be a cause for body odor and, possibly, smelly armpits. Vegetables are a culprit here, especially onions, cabbage and cauliflower. Some of the more conspicuous triggers of bad body odor are caffeine, alcohol and red meat. Spicy or hot food can also lead to stink, as can junk food.

    Of course, it’s pretty ridiculous to suggest you should stop eating your veggies. Even still, try mixing in some of these foods as you try to avoid armpit stink.

    • Citrus fruits such as oranges
    • Herbs that contain chlorophyll, such as parsley, cilantro and mint
    • Yogurt

    Other Tips to Help Prevent Armpit and Body Odor

    Aside from dietary considerations, try taking these steps to help limit armpit odor:

    • Practice good hygiene... and often.
    • Make sure to fully towel yourself off after showering.
    • Change clothes frequently and consider wearing loose-fitting clothes
    • Get ample rest, exercise, meditate... whatever helps you reduce stress.
    • Wear a deodorant to help neutralize and mask armpit odor, or an antiperspirant to help reduce sweating.

    What an Incredible Smell You Discovered! Now, Let’s Address It

    Now that you know some of the factors that play a role in why your armpits might smell bad, you can take steps to address body odor! Try some of these ARM & HAMMER™ deodorants and antiperspirants to fight odors and feel like your most comfortable self.

Reasons Why Your Armpits Stink & How to Fix It | ARM & HAMMER (2024)

FAQs

Reasons Why Your Armpits Stink & How to Fix It | ARM & HAMMER? ›

If you still smell after taking a shower, you might not be thorough enough in your cleansing methods. Perhaps you forgot to wash your armpits or other sensitive areas entirely. Antibacterial soaps and scrubs can also help.

How do I stop my armpits from smelling so bad? ›

The following suggestions may help:
  1. Bathe daily. Regular bathing, especially with an antibacterial soap, reduces the growth of bacteria on your skin.
  2. Choose clothing to suit your activity. For daily wear, choose natural fabrics, such as cotton, wool and silk. ...
  3. Try relaxation techniques. ...
  4. Change your diet.

Why do my armpits smell no matter how much I wash them? ›

The primary cause of armpit odor is not the sweat itself, but the bacteria that thrive in the warm, moist environment of our underarms. When we sweat, these bacteria break down the proteins and fats in our sweat, producing the distinctive smell we associate with body odor.

What can a dermatologist do for smelly armpits? ›

MiraDry is a non-invasive procedure that uses microwave energy to reduce sweating and eliminate odour-causing bacteria in the armpits. It is a treatment option for excessive sweating (hyperhidrosis) and BO. The procedure is typically performed in a dermatologist clinic and it can be done in one or two sessions.

What foods help with body odor? ›

Leafy-green vegetables: Spinach, kale, lettuce, arugula and other leafy greens contain high levels of chlorophyll, which can neutralise odour-inducing components.

What naturally kills underarm odor? ›

Apply apple cider vinegar: Apple cider vinegar has antibacterial properties that can help to kill the bacteria that cause underarm odour. Dilute apple cider vinegar with water and apply it to your underarms with a cotton ball. Let it dry before putting on your clothes.

How do you detox your armpits from smelling? ›

To do an underarm detox, use 1 tablespoon of bentonite clay (a natural, detoxifying clay) mixed with 1 teaspoon of apple cider vinegar, which has cleansing properties, and 1 teaspoon of water. Apply the paste to your underarms for around 10 minutes daily for a week or more until your underarm odor subsides.

How to remove bacteria from armpits? ›

Personal hygiene and lifestyle
  1. Keep your skin clean by taking a daily bath or shower with antibacterial soap. ...
  2. Keep your armpits shaved, so sweat evaporates quickly and doesn't have as much time to interact with bacteria. ...
  3. Regularly wash clothing, and wear clean clothes.
  4. Wear loose-fitting clothing made of cotton.

Why do I smell bad even with good hygiene down there? ›

A strong vagin*l odor may be a sign of vaginitis, or it may be a temporary smell related to your hygiene, lifestyle or other changes. Take note of whether you have other symptoms. If the odor is related to an infection, you'll usually notice other changes, like vagin*l itching, burning and discharge.

Why do my armpits smell so bad even after deodorant? ›

However, unlike antiperspirant, deodorant does not block sweat. Thus, the potential mingling of sweat and bacteria might lead to unexpected odors even after deodorant has been applied.

What destroys body odor? ›

The easiest way to eliminate body odor is by taking a bath or shower, which will remove bacteria from your skin. However, for many people a daily shower or bath may not be necessary.

What is the best medicine for smelly armpits? ›

Antiperspirant or deodorizing sprays can help you manage body odor in the armpits. If these don't have an effect, your doctor might prescribe stronger sprays or recommend Botox injections.

Can armpit odor be cured permanently? ›

From Botox injections to medical-grade antiperspirant, you may have found temporary relief, but no permanent solution. MiraDry is the only treatment that provides permanent and clinically proven results.

How to stop armpit smell? ›

Do
  1. wash your armpits, groin and feet at least twice a day with soap and dry thoroughly.
  2. shave your armpits regularly.
  3. use antiperspirants and deodorants.
  4. change and wash your clothes regularly.
  5. wear natural fabrics like cotton, wool and silk.
  6. wear antibacterial socks.

How do I get my body odor back to normal? ›

But you can do a few things to make body odor go away.
  1. Keep Yourself Squeaky Clean. ...
  2. Use Antibacterial Soap. ...
  3. Towel Off Well. ...
  4. Use 'Industrial Strength' Antiperspirants. ...
  5. Keep Your Clothes Clean. ...
  6. Cut Out or Cut Back on Certain Foods or Drinks.
Feb 13, 2023

Does hydrogen peroxide help armpit odor? ›

Effective folk remedies for underarm odor

Hydrogen peroxide Mix a teaspoon of hydrogen peroxide in a cup of water, stir well, then dip a clean towel in this solution and apply it to your armpits, keep it for 30 minutes.

Why do the armpits of my clothes still smell after washing? ›

The butyric acid can continue to produce molecules that smell. If it isn't completely removed when washed, the clothing can continue to smell.

What is the best deodorant for smelly armpits? ›

Give your pits the protection they need with our top pick, the Uriage Clinical Strength Deodorant. It's a roll-on antiperspirant that glides on in just a few swipes to keep sweating at bay. The aluminum-based formula works by reducing underarm wetness, though it also targets odors.

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