Have you ever encountered these pimple-like bumps on your head? I have them. ;v;
It happened when I was using a strong conditioner, I believe the brand was called Aussie. Yeah, after a week, I started to feel pain on my head because of these bumps. Oh I only feel it when I like softly bang my head against the wall. I started scratching it off, hoping it will go away, but it didn't work. Instead of using strong conditioners, I went with Head and Shoulders, like I always do. And Selsun Blue because it has (I forgot what kind of acid it is) this type of acid ingredient that is supposed to help with the bumps.
I still have those bumps for a year now.