Sephora have launched an iPhone app which allows customers to shop at Sephora as well as the ability to scan product bar codes to create shopping lists and find out further information. If you download the app you can visit Sephora to claim a free Sephora iPhone case.
You can see more about the app on this video here:
You can download the app here. (It appears to be US only, or at least not available in the UK when we tried it).