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In a surprisingly unhygienic turn of events, Hollywood stars Ashton Kutcher and Mila Kunis have revealed that they don't bathe their children too much, unless of course, dirt is visible and the activity becomes absolutely essential.

In a conversation with Dax Shepard on his podcast Armchair Expert, the couple agreed that they only wash the vitals every day.

"I didn't have hot water growing up as a child so I didn't shower very much anyway," Kunis said, revealing that she's continued the practice with her own children, six-year-old Wyatt and four-year-old Dimitri. "I wasn't that parent that bathed my newborns, ever," the Friends With Benefits star said.

"If you can see the dirt on them, clean them," Kutcher put in. "Otherwise, there's no point," he said, adding that he too only ever washed his crotch and armpits daily "and nothing else ever."

While Kunis agreed to washing her face twice a day, Kutcher said he didn't bother doing that either, saying the only thing he does is "throw some water on his face after a workout to get all the salts out".

The revelation prompted confused and concerned responses from fans on social media, who took the opportunity to troll the movie stars for their bathing habits.

Their fans can't get over the news and to be honest, we can't either. Hopefully this was an elaborate prank.