I just finished a course of Clarvalis at the age of 26. So far, it seems to have done the trick. I had some joint pain and extremely dry lips but my takes-the-cake side effect was definitely (drumroll please)...bloody vagina! Like I used to bleed like a stuck pig every time I had sex. I had just started seeing someone new and I really liked him and I honestly thought for several months that it was an issue with size or, uh, exuberance and that I would have to stop seeing him or ruin all my sheets for the foreseeable future. That said, it is a miracle drug (and the bleeding eventually stopped). Acne is the pits; it's hard enough to feel like an adult as it is, let alone with giant pus-ing sores all over your face and back.
How has no one mentioned Malin + Goetz yet?! It IS actually the holy grail of natural deodorants. Okay, i think it is technically "for men" but it's just eucalyptus, which fights odor and bacteria, won't mess with your perfume and doesn't smell Old Spice-masculine. Yeah, it's $18 like the Lavanila but for nearly twice as much product. I bought some in early January and am not even halfway through it yet. AND I still smell nice.
Here is the product listing: http://www.malinandgoetz.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=128&category_id=2&manufacturer_id=0&option=com_virtuemart&Itemid=55
And here is their list of stockists. I get mine at Barneys: http://www.malinandgoetz.com/index.php?option=com_contact&catid=10&Itemid=21