Duac
"I was prescribed duac after getting very bad acne after coming off the pill. This was very unusual for me as I'd never had bad spots and it didn't run in my family. I found that my face was extremely oily all the time and was giving me large horribly pustule spots. 
I was given 3% duac as I was told the 5% would make the skin very dry and 1% may not work so it would be reviewed and altered to see how it went. I noticed changes immediately after 1 week and my skin has been flawless and I've even had compliments on it!
For the people saying it made their skin too dry I could suggest maybe getting a lower % and only apply it once a day as I do at night time after washing my face. It honestly works wonders I couldn't recommend it more!"