In addition to diet, are you also on acne medications? I ask this because I've used diet numerous times in the past to clear up my acne, and while it has helped, it has never gotten me totally clear. I've also just recently been put on an oral antibiotic and intend on using diet in conjunction with it.
Hey! When I was prescribed antibiotics 4 months ago, I also cleaned up my diet at the same time and started taking probiotic supplements. After 4 months of a healthy diet + antibiotics + probiotics plan, my cystic acne has healed and my face is smooth, leaving behind some pigmentation. Me and my doctor were surprised by the results. Only thing is I don't know which one really helped me clear up, the diet or the medication or the combination of both. Whichever plan you go with, I hope it works for you!