Wow these people didn't read that question very well, It is a skin condition that happens and I'm not sure why, Its called keratosis pilaris. I don't know how long you posted this question, But there are 2 things you can do to help them reduce them. Use a soap called Basic. You can find it at any drug store they also have it in a body wash. The second thing you can use is call KP DUTY You can find that online or at sephora. This will help reduce the bumps as well as redness hope I helped find your answer cause the other answers made no sense in my eyes
