Short answer: after every wear.
Longer answer: it depends a bit on how you wear it — but in most cases, washing your underwear after each use is the safest and most hygienic option.
Why it matters
Underwear sits directly on your skin all day.
That means it collects:
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sweat
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bacteria
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natural oils
Even if it still looks clean, it usually isn’t.
What about exceptions?
There are a few edge cases:
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If you’ve only worn something briefly at home
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If it’s loose sleepwear and your body wasn’t sweating
But for everyday wear, especially outside the house → wash it.
How to wash it properly
To keep your underwear in good shape:
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Wash at 30–40°C for everyday use
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Use gentle detergent
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Avoid high heat drying (it damages elastic)
This helps maintain both hygiene and longevity.
Where most people go wrong
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Washing too hot → damages fabric
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Washing too cold (with heavy wear) → not fully clean
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Overloading the machine → less effective cleaning
Underwear is one of those things where simple rules work best:
Wear once → wash once.
And if it’s made from breathable, high-quality fabric, it’ll last longer and feel better over time.
