“If you could see the dirt on them, clean them,” Kutcher said.

“Otherwise, there’s no point.”

The week was topped by Jake Gyllenhaal admitting he bathes infrequently in aVanity Fairinterview.

Dwayne Johnson smiling

“More and more I find bathing to be less necessary, at times … Shower (cold) when I roll outta bed to get my day rollin'.

Shower (warm) after my workout before work.

Shower (hot) after I get home from work.

Dwayne Johnson smiling

Face wash, body wash, exfoliate and I sing (off key) in the shower.”