my skin clears up a lot when I take herbs. It may actually get worse for a week as toxins come to the skin, but after a few days I usually have incredibly clear skin, and I am not as careful as you are with washing it, I'm sure. I just use whatever cleanser I find at the drugstore. Anyhow, I have found when I eat a big salad every day and get lots of fiber that really helps. Definitely get more fresh vegetables and check out this site:
http://www.herballegacy.com/Acne.html
I also take chapparal tea (try a small amount, it can cause liver damage if you are too toxic). It tastes terrible but does a lot of good.
I used to take lower bowel formula, which will have the same effect as the salads, and I am going to get some liver and gall bladder formula. You can go into any herb store and ask for these formulas, they are Dr. Christopher's brand. I also use teas from the grocery store, like PMS tea - just look with the other teas, and take it before your period.
Basically from what I've heard, acne can be caused by a sluggish intestinal tract - not enough fiber/probiotics, which helps move things through your system better. Best of luck.