Smelly underarms can make you feel uncomfortable, although this is a problem that most people have faced at some point. Commonly called body odor (BO-body odor) and technically bromhidrosis odor meets bacteria.), underarm odor is usually not cause for concern.

There are a number of steps you can take to help minimize and prevent underarm odor, which may alleviate any concerns you may have about the condition.

Unpleasant body odor


Your body is covered with sweat glands because sweating is a necessary function to help us cool down.

There are two main types of sweat glands:

  • The eccrine glands cover most of your body and open directly on the surface of the skin.
  • In contrast, apocrine glands occur in areas with more hair follicles, such as the groin and armpits. Instead of opening on the surface of the skin, the apocrine glands enter the hair follicle and then open up on the surface.


Eccrine và Apocrine

When your body heats up, the eccrine glands secrete sweat to cool your body. It’s usually odorless, until bacteria on your skin start to break it down. Certain foods and drinks you have consumed, as well as some medications, can also cause the smell of sweat. The apocrine glands work mainly under stress, secreting an odorless liquid. This liquid starts to smell when it comes in contact with bacteria on your skin. These glands don’t start functioning until puberty, which is why that’s often the time when we start to notice body odor.

While this is normal, some people sweat more than usual. This condition is called hyperhidrosis. People with hyperhidrosis sweat excessively, especially from their hands, feet, and armpits. If your doctor thinks you may have the condition, they can do tests to confirm the diagnosis and make sure it’s being treated properly.


1. The cause of underarm odor is due to genetic factors

This is one of the first factors that cause armpit odor in many people.
According to clinical tests:

  • If both parents have underarm odor, the rate of children suffering from underarm odor is 85% or more
  • With only one parent, this number can be reduced to 50%.

2. Eating habits and daily food use

Drinking alcohol, stimulants, eating hot spicy foods, baked goods, strong-smelling spices in large quantities such as onions, garlic, pepper, anise …
The lack of zinc in your food or the addition of too much fat and protein can also lead to high underarm odor.

Eating habits can affect armpit odor

3. Weather conditions

Sunny and humid conditions, heavy rain, and extreme weather affect armpit odor a lot; Especially, the unpleasant climate in Vietnam makes the rate of people suffering from underarm odor is quite high.

4. Hygiene is not clean, lazy to shower

People who live in an unclean manner, lazy to bathe their bodies, will have a lot of bacteria, especially in damp and sweaty areas like the armpits.
When sweating a lot, it is affected by bacteria that will cause a very unpleasant body odor.
Your armpit area is moist, and it is difficult for sweat to escape, so inflammatory conditions can occur that affect health, causing axillary lymph nodes.

5. Causes of armpits due to disease

Some diseases have a serious effect on the sweat glands, especially underarm sweat.
Some people have diseases such as kidney, liver, digestive system problems, hyperthyroidism, infections caused by bacteria or fungi.
The cause of underarm odor is due to the hormonal functions not working properly.
Medicines to treat the above diseases are also the cause of armpit odor

6. Bad mood, insomnia, stress are also causes of armpits

When our body is in a bad mood, insomnia and stress for a long time, the body will change hormones, leading to armpit odor.
The sweat glands secrete a type of fat, when it encounters mold bacteria that are hiding in the armpit areas, it will cause an unpleasant odor.
If you don’t change your lifestyle, your mood, and get treatment in time, it will only make your mood worse.

Stress also affects your body odor.

7. Teenagers are going through puberty

This is the age when a child’s body will undergo many major changes.
The body’s organs and organs, even the sweat glands, are all developing simultaneously to perfect both biological function and appearance.
Adolescent body’s hormones also change, causing body odor to appear, especially underarm odor.
In order for this age group to develop normal psychophysiology, without guilt in life, it is necessary to promptly handle underarm odor as soon as possible.

Puberty can change body odor

8. Armpits smell in pregnant, childbirth, and premenopausal women

Hormonal changes are one of the main causes of underarm odor.
Pregnant women often have big changes during pregnancy such as temperament and endocrine.
Many newly developed hormones are also the cause of underarm odor
Women in this period also need a lot of food to nourish the fetus, too many nutrients are overloaded in the body, causing armpit odor.


Underarm odor in pregnant, childbirth, and perimenopausal women

In particular, pre-menopausal women, when there are major hormonal disturbances, the body’s body temperature rises, or gets hot at night, sweats a lot.


Treatment of underarm odor depends on the severity and underlying cause of the body odor. Bad odors can be caused by poor hygiene or not using the right product. Or there may be an underlying medical condition that needs to be treated.

Use an over-the-counter antiperspirant (OTC-Over-The-Counter); deodorant (or combined deodorant); Or natural essential oils daily, after bathing, can help overcome underarm odor. Sometimes you need to try different types to see which works best for you.

Antiperspirants help reduce sweat production by temporarily blocking sweat pores. The less sweat is produced on the surface of the skin, the less odor it has. Deodorants prevent sweat from smelling, but not on its own. These products often contain alcohol, which makes your skin acidic. This inhibits bacteria from forming which is what causes sweat odor.

If OTC deodorants don’t work, talk to your doctor about prescription deodorants.

While many people are familiar with Botox for its use in smoothing facial wrinkles, it has a number of other practical uses as well. Botox injected into the sweat glands reduces both sweat and odor. This is a common treatment for people with hyperhidrosis.

However, this is not a permanent solution. The injections only last a few months, so the procedure needs to be repeated as needed.

You use Bioremake’s DEODOROIL product; It is synthesized from pure natural essential oils and body deodorizers to prevent underarm odor.

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There are things you can do to prevent underarm odor from developing in the first place. Shower daily with soap and essential oils, as well as bathe after strenuous activity such as exercise or sports, to remove odor-causing bacteria and sweat.

Wear loose, breathable fabrics like cotton, linen, and moisture-wicking blends – especially if you sweat a lot. These will help keep your body cooler better than clothes made from non-washable fabrics.

A 2016 study: Trusted Source found that shaving or waxing underarms significantly reduced underarm odor. This is because cleaning is more effective on shaved or waxed skin.

Shaving or waxing underarms significantly reduces underarm odor.

Since the stress response can cause sweat glands to secrete sweat, stress management and anxiety reduction techniques can help you regulate your stress response and minimize your physiological sweat response. . Find out 16 ways you can reduce stress and anxiety.

Here are some additional life DIY tips that you can try at home. Find what works best for you, especially in different seasons.


If you’ve used a variety of deodorants or antiperspirants and none of them help reduce underarm odor, talk to your doctor. They can rule out underlying medical conditions and recommend stronger treatments.


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