I had adult acne for 10 years and it cleared up after I stuck to a dairy free diet. Before this, I tried accutane and all sorts of other medication that only made things worse. f you do try it, you have to avoid things like milk, cheese, baked goods that may contain milk. if you already tried it, did it work for you or am i a lucky one
I have like cheese occasionaly, and maybe a splash of milk with my tea when i have it. I went to an allergist a year ago to get tested for food sensitivities (because i noticed i had a weird reaction to citrus fruits) - turns out not only did i have sensitivities to citrus fruits, but to dairy as well! along with countless of other popular ingredients. wahh- but ive learned to live with it. and by not eating things i am sensitive to my rosacea and acne looked much better.
I don't know if it helps when i cut it out, but when I doubled my servings of Whey protein I got a bad breakout.
I then started eating cheese again and got another breakout.
I don't expect cutting out dairy will cure my acne, but if it stops breakouts then im fine with that.