I recently took a visit to the barbershop to get a haircut. The name of the haircut is a bald fade , dark hair in the top and very low in the back of the head. After the haircut I washed with shampoo. The next day I worked out at the gym, using the provided towels to keep my head from getting an infection of any kind. Well a few hours after my gym visit, I had a wide rash (raised) in the back of my head. I quickly washed my head, wiped rubbing alcohol on the spot, treated it with Cortosone 10 and took two Aleve. The next morning the rash was gone but now I have a section of small pimples with puss inside. What do you think I can do to get rid of these pimples?