How to wash underwear properly
Proper care helps underwear retain shape, elasticity and function. Learn which temperatures, detergents and habits extend durability.
Underwear is worn directly on the skin and washed frequently. To ensure that undershirts, briefs and other items maintain their shape, elasticity and function, proper care is essential.
Temperatures that are too high, unsuitable detergents or incorrect care can damage materials such as Spandex or delicate fabrics. With a few simple rules, you can significantly extend their lifespan.
Quick answer
Underwear should generally be washed at 30–60°C/86–140°F using a suitable detergent. It is important to avoid fabric softener and to handle delicate materials with care.
Which washing temperature should you choose?
The ideal temperature depends on the material and the desired level of hygiene:
- 30°C/86°F – for delicate materials such as modal or functional fabrics
- 40°C/104°F – standard for most undershirts and underwear
- 60°C/140°F – for higher hygiene, especially with cotton
Temperatures that are too high can damage Spandex fibers and lead to faster loss of shape.
Which detergent should you use?
For underwear, mild detergents without aggressive additives are recommended. Important:
- do not overdose detergent
- use gentle products
- use special detergent for functional fabrics when needed
Detergents that are too strong or incorrectly dosed can damage fibers and shorten lifespan.
Why should you avoid fabric softener?
Fabric softener can be problematic, especially for underwear containing Spandex or functional fibers. It forms a coating around the fibers and can:
- reduce elasticity
- decrease breathability
- impair functional properties
Learn more here:
Fabric softener for underwear: useful or harmful?
Common washing mistakes
- washing at temperatures that are too high
- using fabric softener
- incorrect washing programs
- overloading the washing machine
These mistakes can lead to loss of shape and reduced comfort.
Tips to extend lifespan
- wash underwear inside out
- separate by similar colors
- use gentle cycles for delicate fabrics
- avoid excessively high temperatures
Proper drying of underwear also plays an important role.
Frequently asked questions
How often should you wash underwear?
Underwear should be washed after each use, as it is worn directly on the skin.
Can underwear be tumble dried?
It depends on the material. High heat can damage delicate fibers. Air drying is often the better option.
Why does underwear lose its shape?
This is often caused by high temperatures, fabric softener or excessive heat during drying.
