I agree with a link between dairy and acne. I don't like milk and I don't eat a lot of dairy, but when I do eat ice cream my face breaks out within days.
Quote from an article linking dairy and acne ...
Acne occurs when steroids (androgens) stimulate the sebaceous glands within the skin's hair follicles. These glands then secrete an oily substance called sebum. When sebum, bacteria and dead skin cells build up on your skin, the pores become blocked, creating a zit.
"As pointed out by Dr. Jerome Fisher, 'About 80 percent of cows that are giving milk are pregnant and are throwing off hormones continuously.' Progesterone breaks down into androgens, which have been implicated as a factor in the development of acne...Dr. Fisher observed that his teenage acne patients improved as soon as the milk drinking stopped."
by Frank Oski, M.D. (Director, Department of Pediatrics, Johns Hopkins University School of Medicine