Here are a few things that I have heard that work:
1. Rose hip oil
2. Lavendar essential oil
3. Drink Aloe Vera Juice to help speed the healing from inside out
4. Skin Culture Peel 4000 (www.skinculture.com) not sure of the price.
5. Microdermabrasion - probably a bit more pricey
Hope this helps. I got these tips for a holistic Acne book that I have called Acne No More.