Actress Kirsten Dunst has quit smoking after a hypnotist "scared the death" out of her.

The Spider-Man star decided it was time to kick her nicotine habit and called on an extreme hypnotist to help her stub out her cigarettes.

She tells U.S chat show host Conan O'Brien, "You go three times... (On the first visit) he takes little sips of water as he's talking to you and scaring the living death out of you. He's basically saying, 'You never know when you're gonna die of cancer'.

"And then the second time you go, you quit, and then the third time it's like, 'Any concerns or anything...?' It wasn't that hard."