How to Wash Underwear Properly

Underwear is worn directly against the skin and washed frequently. To ensure that undershirts, briefs and other underwear retain their shape, elasticity and function for as long as possible, proper washing and care are essential.

Temperatures that are too high, the wrong detergent or unsuitable care can place unnecessary strain on materials such as elastane or delicate fabrics. A few simple rules can significantly extend the life of your underwear.

Short answer

Underwear should generally be washed at 30–60°C with a suitable detergent. It is important to avoid fabric softener and to treat delicate materials as gently as possible.

What is the right washing temperature?

The ideal temperature depends on the material and the level of hygiene required:

• 30°C – for delicate materials such as modal or performance fabrics
• 40°C – standard for most undershirts and underwear
• 60°C – for higher hygiene requirements, for example with cotton

Temperatures that are too high can damage elastane fibres and cause underwear to stretch out more quickly or lose its fit.

Which detergent is suitable?

Mild detergents without aggressive additives are suitable for underwear. Important points include:

• do not use too much detergent
• choose gentle products whenever possible
• use a suitable specialist detergent for performance fabrics

Why should you avoid fabric softener?

Fabric softener can be particularly problematic for underwear containing elastane or performance fibres. It can coat the fibres with a film and:

• reduce elasticity
• reduce breathability
• impair the performance of functional fabrics

Find out more: Fabric softener for underwear – useful or harmful?

Common mistakes when washing underwear

• washing at excessively high temperatures
• using fabric softener
• choosing the wrong wash cycle
• overloading the washing machine

Tips for longer-lasting underwear

• wash underwear inside out
• wash similar colours together
• use gentle cycles for delicate fabrics
• avoid unnecessarily high washing temperatures

Proper drying of underwear also plays an important role in extending its lifespan.

Frequently asked questions about washing underwear

How often should underwear be washed?

Underwear should be washed after every wear because it is worn directly against the skin and absorbs perspiration and skin particles.

Can underwear go in the tumble dryer?

That depends on the material. High heat can damage elastane and delicate fibres. Gentle drying is usually the better choice.

Why does underwear lose its shape?

Common causes include excessively high washing temperatures, fabric softener or high heat during drying.

Personal advice

Contact us: