Why underwear smells even after washing

Short answer: Many people wonder why they smell of sweat even after a shower, because the smell can sit in the clothes and not on the body. Often it comes down to detergent residue, a low temperature or moisture that stays in the fabric. Here is what you can try.

Why underwear smells even when it is washed

A smell can stay in the fabric even when clothes look clean. It can come from detergent residue, traces of sweat or moisture that never dried fully. That does not mean you are doing something wrong, only that washing and drying can be fine tuned. Start by looking at how full the machine is and which programme you use.

When it smells of sweat even though I have showered

If it smells of sweat even though you have showered, the clothes are often the cause and not the body. Put on clean bamboo boxer briefs after a shower and check they are dry before you put them on. Moisture from the towel or the body can cause a smell if you rush.

Too little or too much detergent

Too much detergent can stay in the fabric and hold on to smell, and too little does not clean properly. Use the amount the pack recommends for your water hardness and load. An extra rinse can help if you often find that clothes smell even though they have just been washed.

An overfilled machine

When the machine is packed full, water and detergent cannot reach all the clothes. The underwear is not rinsed properly, and the smell can linger. Fill the machine so that the laundry has room to move freely, and choose a programme that suits the load and the care label.

Fabric softener leaves a film

Fabric softener can leave a film on the fibres that traps smell and makes the fabric less soft. Try leaving it out for a few washes and see if it helps. Bamboo is soft on its own, so you rarely miss it. Wash at the temperature the label allows, and rinse well.

Drying and damp corners

Underwear that is not fully dry when put away can smell stuffy. Hang it on a line where air can reach it, and let it dry completely before it goes in the drawer. Check the waistband and seams too, because they hold moisture longest.

Fabric, changing and fit

Fabric and fit matter too. A soft fabric and a fit without friction create less heat and moisture. Change more often, and put a pair of bamboo socks in your bag so you can change them if your feet get sweaty. Clean, dry clothes help the whole body.

When to talk to your doctor

If the smell does not go away even when you wash and change often, or if you have itching, redness or pain, talk to your doctor. It can have causes other than clothing. For everyday wear you can read more about bamboo clothing for men and choose something that feels comfortable.

Frequently asked questions

Why does underwear smell even when it is washed?

Detergent residue, sweat or moisture can stay in the fabric. Try an extra rinse, less detergent and a machine that is not overfilled.

What do I do if it smells of sweat even though I have showered?

Check that your underwear is clean and completely dry, and change clothes after showering. If the smell lasts, talk to your doctor.

Can I use fabric softener against smell?

It is not recommended, because fabric softener can leave a film on the fibres that traps smell. Rinse well instead and follow the care label.