Did you know one in three young adults visit a dermatologist about their acne and 63 per cent of teenagers suffer from two signs of imperfection-prone skin?

Acne is caused by hormonal changes that come with puberty.

As you begin to mature and develop, the sebaceous glands may become overactive.

As pores become clogged with too much sebum and there is a build up of dead skin cells, blackheads and whiteheads can form. Bacteria can get trapped inside the pores and multiply causing redness and swelling, and let’s face it that does nothing for your confidence.

Effaclar Duo is La Roche-Posay’s first complete skincare solution to act simultaneously on blackheads and pimples, the two most common signs of imperfection-prone skin.

Recommended by more than 25,000 dermatologists worldwide, the Effaclar range works to purify the source of the imperfections and eliminate dead cells that obstruct pores.

Visit FollowJess.com to find out how you can build your confidence, claim your free sample, and enter a prize draw to win the ultimate weekend in London, with head-to-toe pampering

In the meantime, build your confidence by entering this competition to win a La Roche-Posay Effaclar goody bag, containing Effaclar Duo, Effaclar Cleansing Gel, Anthelios Extreme Fluid AC SPF 30 and Toleriane Foundation.

To be in with a chance of winning answer the following question:

In the video on FollowJess.com, where is Jess when she asks her first question? a) Park, b) Office, c) Bathroom

Send your answer, with your name, address and contact number on a postcard or a stuck-down envelope to: La Roche Competition, News Shopper, Mega House, Crest View Drive, Petts Wood BR5 1BT.

You can also enter by sending a text. Type LAROCHE leave a space and send your answer with your name and address to 80360.

Closing date: October 23.

Watch FollowJess.com teaser:

Competition rules: Employees of Newsquest (London) Ltd, their families and anyone else connected with this promotion are not eligible to enter. Prizes are not transferable and there are no cash alternatives. The editor’s decision is final. Texts cost 50p plus your normal operator text charge. Text lines close 22/10/2009 at 11.59pm. Service provided by Newsquest Media Group.