I had severe cystic acne for 7 years. I ignored all the Dermatologist and Doctors. I went found the cause of my acne. Leaky gut and Candida overgrowth which caused food sensitivities. I avoid these foods, and suddenly, after 7 years of disfiguring acne, my acne started going away! I'm happy to say I am clear today.
Now to all the dumb asses who blindly follow doctors' and derms' advice: Acne is a billion dollar industry, so of course they will take advantage of you for money! Dermatologists aren't trained in nutrition, or acne. They are trained to label acne, and shove chemicals down your fucking throat in exchange of your cash (or your insurance's if you're lucky). The medical industry claims to 1. Not know what causes acne 2. Not have a fucking clue as to how to cure it & 3. That Accutane is the closests thing to a cure there is and ever was (which could not be further from the truth)
They also claim that it's strictly hormonal and non-preventable, and just a part of life you have to accept. In doing so, you give them money until you die, or the shit "magically dissapears" which doesn't really happen for everyone. Meanwhile, I cure my own acne at 18, leaving all the "top ranked in my state" doctors with they're jaws wide open. Because they thought I was a fuckin idiot, when in reality, they were the ignorant fucks.