What is this? Everytime I get a haircut it happens, tried different things, nothing has helped. Bumpy pimples, getting worse. Any ideas?

17 1

22 2

48 4

21 1

37 1

23 0

25 1

49 0

24 0

28 1

21 0

12 0

64 8

32 0

25 0

39 1