Celebrity endorsed ad campaigns are unbearable at the best of times (we're looking at you John Lydon), but when it comes to watching one of the most famous women in the world discussing the trauma of her acne problems as if she's got a terminal illness then it becomes even more hard to bear. So here's Katy Perry in a new commercial for Proactiv in which she does just that - with added awfulness.

We don't know what makes us feel more nauseous...

The cheesy Jonas Brothers-esque pop/rock riff on loop in the background, the cunty generic voiceover man explaining to us the "zit-zapping" intricacies of Proactiv Vitalising Cleanser, 'RECORDING ARTIST Katy Perry' telling us that it was an "amaaaaazing blessing to have clear skin" or her horribly goofy laugh to conclude the commercial.

If you managed to make it that far without gouging your eyes and ear drums out with a fork.

Still, it could be worse...