One in five women don't change their underwear daily, with some going for days in the same knickers, a survey has found.
Experts say it's the perfect environment for nasty bugs to thrive.
The survey of more than 1,000 women by The Derm Review - a skincare platform - found that 21 per cent wear underwear for “multiple days”.
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A staggering one in ten women wear the same knickers for three days or more.
It means the dirty habit is far more common than you’d imagine, with friends and colleagues picking their pants out of the laundry basket.
Reasons can include saving on laundry time and costs, or environmental reasons. Others may consider it a perfectly reasonable thing to do.
More than half, 55 per cent wear their pants to bed after a full day in them - over the 55 age limit being most guilty.
But the study found that one in three (33 per cent) of women wear their bras for longer than advised, with this figure highest in those between the ages of 35 and 44 (38 per cent).
While there are no rules around hygiene habits, experts have advised you should change your underwear every day, and take it off at night.
Almost a quarter, 24 per cent of women, said they don’t change their washing and changing after exercising, most common in with those under the age of 25 and below.
Typically, bras are washed after two to three wears.
