u/Comprehensive_Use26

I’ve had this on the back of my head for a long time (probs 3 years) and now it feels that it’s gotten bigger. At first I thought it was a mole. But I’m not sure if the moles grow like mine has grown. I also have a smaller one a few centimeters from the big one. It doesn’t burn or hurt but it does bother me. Can someone give me their opinion? Is it something contagious? I use a lot of hair products for my hair. Should I avoid them? I’m freaking out a little bit.