Adapalene / benzoyl peroxide
"Please don't give up on this product too quickly. For the first week or so, it's going to burn and your skin's going to feel extremely dry and tight. However, it will go away in time! My skin has never looked better after a few months of use. Just remember to moisturize every day, always use sunscreen when it's sunny out (or use a moisturizer with SPF), and use about a pea sized amount (it really goes a long way)."