I liked their completely emollient moisturiser and use AHA 8% when my nose/T zone is really laden with blackheads and has more than 2 blemishes. So, very occasionally. She says you can use AHA everyday once you're used to it, but when I tried that, it not only did nothing for my blackheads, it made my skin incredibly flaky. I don't use CE moisturiser anymore as my skin is less combo than it used to be.
Some people swear by the BHA - think that's for acne.