Adult acne not responding to treatment
I thought I conquered my teenage acne until it came back at 23 but a different kind of zits. My teenage acne was a battle over oil but my adult skin needs to stay hydrated or it breaks out. Benzyl Peroxide treatments don't really do much for me cos they dry my skin out so much, it kind of puts me back to square one. This includes on my chest and shoulders - grrr! As far as products go, I've also had good results with Philosophy, like the respondent above. The other Sephora brand I really like is Jurlique - I can vouch for the calendula cream and a few of the hydrating sprays and serums.
The other thing to consider is what's going on inside - hormone changes, allergies etc. It takes a combo of good skin care regime, birth control and careful diet (low on gluten, dairy, sugars, coffee) for me to have nice skin.