Unilever is investing £3.5m in its new teen deodorant brand Sure Girl with a marketing campaign launching on 7 April.

The campaign is based around embarrassing moments that make teenagers cringe under the strapline 'We know what makes you sweat'.

The TV ad features cringe-worthy moments such as a younger brother checking private emails or a dad dancing in front of friends, said the company.

It has also joined forces with social networking site Bebo and online teen drama Sofia's Diary to offer fans the chance to win a makeover and a photoshoot with the show's star.