I had cystic acne for 13 years that got worse as I was ovulating every month. It appeared to be hormonal acne. I of course tried so many things that didn't work. Then one day I read about vitamin D3 and a week after taking it my acne was gone. I take 7000 IU per day. I am a 120lb female. The more I take the drier my skin is which is what stops my acne from happening. The first two weeks that I took it, my skin started peeling a lot. I loved it. The peeling made my hyperpigmentation go away faster and if there was a small bump, it would peel right off, rather than growing into a big infected cyst. If I take 8000 IU itâ€™s too much because my eyelids and eyeballs start to dry out. At one point I took 10 000 IU for a few days and my eyes got extremely dry and puffy. If I take 5000 IU it still works, but I get small bumps here and there. If I miss my Vitamin D pills for half a day I begin to break out again. Iâ€™ve been taking it for about a month now. I ovulated without breaking out for the first time in my life. My hair is also not uncontrollably greasy anymore. I can wash it every 2 days now, where I used to have to wash it 1-2 times per day and it always looked terribly greasy before washes.