I just posted about acne, and it included a few more options such as herbs that purify the blood, cleansing the lymphs, and avoid all sugars. Many acne-prone people have a kind of hypoglycemia of the blood and allergies, so avoiding Sugar and cleansing the lymph in addition to colon and liver is very important.
Also, for managing fats better, take digestive enzymes with your EFAs or they might actually lead to more acne. If you don't digest the fats they clog you up and you don't get all the benefits of the EFAs.