Hey Amanda,
I had terrible back acne when I was in highschool, and I tried everything, even 'snail gel' which is snail slime and is very healing. I tried emu oil, proactiv, lots of stuff.
I tried accutane when I was 19, and man does that F**** with your mind, emotional stability, and thinking. It helped, but was only a temprorary (18 month) cure.
So then I got older and wiser, and after the accutane I got really interested in natural healing and diet.
First of all, no one should be eating wheat or drinking dairy products. That is what I eliminated first. The wheat especially for me. To this day I avoid as much wheat as I can (cereals, breads, pastas, pizzas, sandwiches, wraps - you'd be surprised how much of this '
peasant food' is in the average diet). Dairy doesn't bother me as much, so I enjoy organic yogurt and organic cheese and the occasional organic milk all from a local farm....but I avoid everything else commercial-grade dairy.
Here is what cured me:
Psyllium husk - about 1 tbsp per day, or two teaspoons throughout the day, mixed with juice or soy milk or even better coconut milk.
Coconut milk and coconut oil - extra virgin, cold pressed coconut oil is one of the best things you can take for your health. It is the best kind of fat you can get, and before corporatism and the corn & soy industry came into being, coconut oil is what most people used to use for oil, along with animal fat. I usually put a tablespoon into a shot glass, mix with some honey or agave nectar, and shoot it back. The agave or honey makes it pleasent - on its own it's a strange texture and flavor lol.
Omega complex supplements - get KRILL OIL if you can. Otherwise, try Norweigan cold water fish oil. Get the 3-6-9 complex, not just omega3.
For your skin in the shower - try Oxy bodywash with
10% benzoyl peroxide.,
like this
http://www.amazon.com/Oxy-Maximum-Daily-Face-Fl-Ounce/dp/B001ET6XNO
And exfoliate with
SALYCYLIC ACID: like this:
http://www.amazon.com/Ives-Apricot-Blemish-Blackhead-Control/dp/B000AA9HGS
And you want to moisturize with Alpha Hydroxy Acid (at least 10% otherwise it is not effective):
http://www.amazon.com/Alpha-Hydrox-...sr_1_1?s=beauty&ie=UTF8&qid=1323995589&sr=1-1
You also want to be eating foods that replenish your cells, like seaweed (different types), quality meat like buffalo or lean meats like that. Drink lots of water. Vitamin E and A help (Accutane is actually a concentrated form of Vitamin A, if that tells you antyhing

). Selenium is a good supplement, and so is Zinc (they work well together too).
Mostly it is avoiding the bad things, and giving your body what it needs. Try to avoid sugar as much as possible. Use STEVIA as a sweetener, or honey or agave nectar. Stevia is the best though. Do not use white sugar or consume anything that has sucraloce or high fructose corn syrup in it.
GET A SHOWER FILTER.
A KDF shower filter is the best, costs around 30-100$ depending what kind you get. It has Copper and Zinc in it, it is called KDF (Kinetic Degradation Fluxion) technology, and it will remove a lot of harmful things in your water.
If you have baths, get one of those hoses that are used for hand-held shower heads and fill the bath up with the shower filter.
That is really a major point. You are showering or bathing in chemicals and your skin is at CONSTANT WAR with the contaminants in your tap water.
Drink pure water as well. If you can, get a reverse osmosis. Otherwise, Aquafina and Dasani are okay brands (you still get the plastics though). Brita filters and fridge filters do next to NOTHING to purify water.
Couple other tips: Wash your sheets at least once a week, hopefully they are light colored and you can use bleach. Get as much sun exposure as you can, even fake tanning is good IN MODERATION and for 5 minutes or less. It is for your health, not for your tan. And for spot-treating certain zits, use a 10% benzoyl peroxide GEL.
Try all that for 3 months, and let me know your results! Goodluck.