People get really frustrated when they pull out a shirt that they just washed. It still smells like sweat. This happens a lot with workout clothes and synthetic fabrics. They trap bacteria inside the fibers, and that is what causes the smell. The smell is not actually caused by sweat. Fresh sweat does not really have a smell. The problem starts when sweat meets the bacteria that’re already on your skin.
This guide will explain what causes sweat odor and how to get rid of it. It will also show you how to do your laundry so that the smell does not come back.
Part 1: The Science Behind Sweat Odor
Why clothes smell is because of bacteria and chemicals. You need to understand what is causing the smell before you can fix it. Sweat odor is not about being dirty. It is a process that involves chemicals and bacteria.
First, there are two types of sweat glands.
Eccrine glands are all over your body, and they make sweat that is mostly water and salt. This sweat does not really have a smell.
Apocrine glands are in your armpits, groin, and chest. They make a fluid that has proteins and fatty acids. This is what causes the smell.
Research has shown that apocrine secretions are what cause body odor. These secretions do not smell at first. They start to smell when bacteria on your skin break them down.
Then bacteria break down the sweat into molecules that smell. The bacteria that do this are usually on your skin. They are called Staphylococcus and Corynebacterium. When they break down the proteins and fatty acids in sweat, they make molecules that smell bad.
These molecules can make your clothes smell like sweat. They can also make your feet smell bad.
The reason the smell survives washing is that standard detergents are not designed to remove the bacteria and molecules that cause the smell. Bacteria can get deep into the fibers of fabrics and detergents cannot always reach them. Also if there is much detergent left on your clothes it can make a layer that traps bacteria and makes the smell worse.
Part 2: Proven Methods to Remove Sweat Odor
- Wash your sweaty clothes soon as you can and hang them up to air out first. If you cannot wash them away hang them up in a well-ventilated area. This will help reduce the moisture and slow down the growth of bacteria. People who regularly use professional laundry in london uk services often follow this habit because allowing airflow before washing helps reduce stubborn odor buildup in activewear.
- Use a detergent that is designed to remove sweat odor. Not all detergents are the same. Some detergents have enzymes that break down the molecules that cause the smell.
You can use a sports detergent that is designed to work on synthetic fabrics. Just make sure to follow the instructions and not use too much detergent.
- Soak your clothes in vinegar before you wash them. White vinegar is a way to remove sweat odor. It works by changing the pH of the fabric and breaking down the molecules that cause the smell.
To use vinegar, mix one part vinegar with four parts cold water. Soak your clothes for thirty minutes. Then wash them as usual.
- Add baking soda to your wash. Baking soda can help remove sweat odor by neutralizing the molecules that cause the smell. It can also help remove bacteria and residue from the fabric.
To use baking soda, add half a cup to your wash load. You can also dissolve it in water. Soak your clothes before washing.
- Wash your clothes in lukewarm water. Hot water can make the proteins in sweat bind to the fabric. Make the smell worse. It can also damage fabrics.
Cold water is usually the choice for removing sweat odor from synthetic fabrics. If you need to use water, make sure it is not too hot.
- Consider using an oxygen-based booster for odors. These products can help break down the molecules that cause the smell and remove bacteria from the fabric.
Just be careful not to use too much, or it can damage your clothes.
- Do not use fabric softener on your activewear. Fabric softener can leave a coating on the fabric that traps bacteria and makes the smell worse.
Instead, use vinegar in the fabric softener dispenser. This will help soften the fabric and remove sweat odor.
- Air-dry your clothes when you can. High heat from a dryer can bake the smell into the fabric. Make it worse. Air-drying with UV exposure can help kill any remaining bacteria and remove the smell.
The Science:
Ultraviolet light, the UV-C kind, stops bacteria from making more bacteria by messing with their DNA. Sunlight has UV-A and UV-B radiation, which can really help kill bacteria. Some research in the Journal of Hospital Infection found that sunlight is a way to get rid of bacteria on surfaces, including bacteria like Staphylococcus aureus.
If you hang your clothes outside in the sun after washing them, it is a way to get rid of any bad smells. If you have to dry them, make sure it is in a well-ventilated area with air circulating so bacteria do not multiply.
- Wash Your Activewear Separately in Smaller Loads
When you wash your activewear with items like jeans, towels, and hoodies, it does not get cleaned as well. The water and detergent need to be able to move around the clothes to get them clean. Washing your activewear in loads helps get it cleaner and prevents lint from getting on them.
Part 3: Prevention
It is great to get rid of smells but it is even better to stop them from happening in the first place. Many fabric-care specialists offering dry cleaning in london services recommend focusing on prevention because stopping bacteria buildup early is often easier than removing deeply trapped odor later.
Rotation and Fabric Recovery Time
If you wear the clothes a lot and wash them a lot bacteria can build up. If you have a few workout outfits and switch between them each one has time to dry and the bacteria do not build up as much.
Washing Machine Hygiene
If your washing machine smells bad it probably has bacteria growing inside it. This can make your clothes smell bad too.
Run a cycle with two cups of white vinegar once a month
- Leave the washing machine door and detergent drawer open so they can dry
- Clean the rubber door seal because it can trap moisture and bacteria
Choosing the Right Fabric
Some fabrics are better than others when it comes to smells.
- Polyester and nylon are not great because they can hold onto smells
- Merino wool is naturally good at fighting bacteria and smells
- Bamboo fabric has something in it that helps stop bacteria from growing
- Cotton is okay; it can absorb moisture. Then, the release smells when it is washed
Part 4: When to Consider Professional Cleaning
Most of the time, you can wash your clothes at home and they will be fine.. Sometimes you need to take them to a professional.
- If you have expensive workout clothes that smell bad
- If you have clothes that need to be washed in a certain way
- If you have clothes that you have tried to wash at home. They still smell bad
- If you have clothes that you need to look really good in, like a uniform
Professional laundry services have detergent and washing machines that can get clothes really clean. They also know how to take care of fabrics so they do not get damaged.
Final Thoughts
Bad smells in your clothes are not because you are dirty; it is because of the way bacteria break down your sweat. Certain bacteria make smells when they eat your sweat, and those smells can stick to your clothes. The ways to get rid of smells that we talked about can help stop the bacteria and the smells.
If you wash your clothes right, dry them right, and take care of your washing machine, you can keep your clothes smelling fresh.
Scientific References
We used the following studies to write this article:
- Callewaert et al found out what kinds of bacteria make smells on clothes.
- Natsch et al found out how bacteria break down sweat and make smells.
- Troccaz et al found out what kinds of bacteria are on our bodies and how they make smells.
- Ara et al found out how bacteria on our feet make smells.
- Dai et al found that ultraviolet light can help kill bacteria.
- Beale, et al found ways to study how bacteria break down things and make smells.
