This gave me terrible acne. I started using biotin to help my hair grow and improve the texture of my skin. After the first week of use, I noticed I was getting an acne breakout. I did not connect it to the biotin until the acne was so severe that I had to see my dermatologist. He told me that it was the biotin causing it. If you are one of those who can take this pill, I'm sure it will be great for you but be aware that if you suddenly break out it is connected to these pills.