Ugh, I know. This is the first piece of advice every dermatologist, esthetician, and nutritionist has told me time and time again, yet I've resisted. I'm aware that dairy is known to cause inflammation and increased sebum production, but I just love cheese (and ice cream, and milk chocolate) so damn much, okay? Because I was at my most desperate, I decided to swallow my cravings and go dairy-free for a very doable three weeks. After just one week into the experiment, my cystic bumps died down significantly, and I cursed everyone for being right.
No one factor causes acne. Acne occurs when sebaceous (oil) glands attached to the hair follicles are stimulated at the time of puberty or due to other hormonal changes. Sebum (oil) is a natural substance that lubricates and protects the skin. Associated with increased oil production is a change in the manner in which the skin cells mature, predisposing them to plug the follicular pore. The plug can appear as a whitehead if it is covered by a thin layer of skin, or if exposed to the air, the darker exposed portion of the plug is called a "blackhead." The plugged hair follicle gradually enlarges, producing a bump. As the follicle enlarges, the wall may rupture, allowing irritating substances and normal skin bacteria access into the deeper layers of the skin, ultimately producing inflammation. Inflammation near the skin's surface produces a pustule; deeper inflammation results in a papule (pimple); if the inflammation is deeper still, it forms a cyst.