Not knowing when and how to wash your bra can lead to something as simple as a bad smell – or a skin infection. 

That’s according to Irish Examiner columnist Denise O’Donoghue, who said women should be careful when washing their delicates. 

“There are bras you can pick up in Dunnes or Penneys that are perfectly functional,” she told Moncrieff. “But if you need a bit more support or bigger sizes, you do have to go more expensive. 

“If you’re dropping €50 on a bra, you’ll want to get the longest life possible out of it.” 

Among the more common polyester bras, washing is also important as polyester causes you to sweat more – especially during the summer. 

“Even if you were just running for a bus today, you’d be sweating,” Ms O’Donoghue said. 

The advice from bra experts had “quite a variety”, according to Ms O’Donoghue. 

“[One company said] every one to two weeks is plenty but they say there is no hard and fast rule... [another said] you should wash it every two or three wears,” she said. 

“That might be surprising for some people to hear, but you could extend the time between washes if you have more than one bra.” 

Handwashing

All the experts agree, however, that you should always handwash your bras to make them last longer. 

“The end of the underwire in the fabric can become damaged in the machine,” Ms O’Donoghue said. 

“I can from experience it’s not fun to get that surprise poke that looks harmless but can actually feel like a sword if your side.” 

Ms O’Donoghue said you should treat your bra like a pair of jeans – wash it at a cool temperature to prevent any shrinking. 

“If you wash it in too hot a water, the elastic can get affected and ultimately the lifespan isn’t as long as it should be,” she said. 

KNHJGK The Bra Fence at Cardrona

The most surprising thing Ms O’Donoghue learned from the bra experts was how to dry it. 

"You shouldn’t tumble-dry, of course,” she said. “But they recommend not putting your bras on a radiator.” 

Leaving it on a clothes rack is the best way to look after your finest underwear, according to Ms O’Donoghue. 

The last question remains – how many bras should you own? 

“I would imagine if you have two or three to get through the week, you’re well covered,” Ms O’Donoghue said. “But if you’re getting expensive ones, it’s a bit tricky.” 

You can listen back here: