Washing underwear: what temperature and can it go in the dryer?

What is the best way to wash underwear? Always start with the care label in the garment. That label tells you which temperature and drying method are allowed for that specific material and style. For many types of men's underwear, a 30 °C programme and air drying are a safe choice, but this is not a rule that is the same for every garment.

With a few simple habits, briefs, jockstraps, thongs, boxer trunks and singlets stay looking good for longer and you avoid placing unnecessary strain on elastic and delicate fabrics.

What is the right temperature for washing underwear?

First and foremost, follow the care label. Much underwear made from polyamide, microfiber, mesh or other elastic materials is washed at 30 °C. According to their labels, some cotton styles may be washed at a higher temperature.

A higher temperature is therefore not automatically better or more hygienic for every garment. If the care label specifies 30 °C, washing at a higher temperature can damage colour, elastic, prints or shape more quickly.

Can underwear go in the dryer?

The same principle applies here: check the symbol on the care label. Some fabrics may be tumble-dried according to the manufacturer, while others explicitly may not.

If you want to minimise wear on elastic waistbands, straps and synthetic fabrics, air drying is usually the gentlest choice. Hang the underwear up or lay a delicate style flat to dry. Avoid direct contact with a hot radiator.

Six practical tips for washing men's underwear

1. Use a laundry bag for delicate styles

A laundry bag is particularly useful for jockstraps, thongs, mesh underwear and styles with thin straps. It reduces the chance that straps or fabric will twist around other clothing or catch on something during the wash.

2. Sort by colour

Preferably wash light and dark colours separately, especially when a garment is new. This reduces the risk of dye transferring onto lighter underwear.

3. Consider the material too

A cotton brief does not always require the same treatment as a mesh jockstrap or a thong made from shiny polyamide. Do not look only at the colour, but also at the fabric and the instructions on the label.

4. Choose a suitable detergent

Use a normal or mild detergent that suits the colour and material. Avoid bleach unless the care label allows it; bleach can damage colours, prints and fibres.

5. Wash underwear after wearing it

Underwear sits directly against the skin and absorbs sweat and skin oils. For normal everyday use, washing after each wear is therefore the most logical routine.

6. Give elastic time to dry

Do not pull hard on a wet waistband or straps and do not wring the garment out. Let it dry gently so that the shape is placed under as little strain as possible.

How do you wash jockstraps and thongs?

With jockstraps, the elastic rear straps deserve particular attention. A laundry bag prevents them from wrapping around other garments during the wash programme. For thongs and strings, a laundry bag is also useful when the style has narrow straps, mesh or a delicate fabric.

For bold prints, metallic effects, transparent materials or other special finishes, always check the care label extra carefully. Details like these may require specific washing instructions.

How do you wash underwear with a distinctive pouch?

A shaped or roomier pouch does not need to be washed differently simply because of its shape. It is, however, sensible to gently reshape the garment after washing and avoid wringing it out. This minimises strain on seams and elastic parts.

Can you iron underwear?

For much men's underwear, ironing is unnecessary. Synthetic materials and elastic waistbands can also be sensitive to high heat. If you do want to iron it, first check the ironing symbol on the care label and keep hot ironing surfaces away from elastic and prints when the label does not allow it.

Frequently asked questions about washing underwear

Should underwear always be washed at 30 degrees?

No. The care label is the deciding factor. For many elastic and synthetic styles, 30 °C is a suitable temperature, but according to the manufacturer some garments may be washed at a higher temperature.

Can underwear be washed at 40 degrees?

If the care label allows 40 °C, yes. If the label states a maximum of 30 °C, keep to that temperature.

Can men's underwear go in the dryer?

Only when the care label allows it. Air drying is generally gentler on elastic bands and delicate synthetic materials.

Is a laundry bag necessary?

Not for every style, but it is useful for jockstraps, thongs, mesh and other styles with straps or delicate fabrics.

How often should you wash underwear?

For normal everyday use, wash underwear after every wear.

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