hi i would just let it get better on its own been washing the inside of your helmet? if you have not washed it enough or if its a share helmet? then it needs a good clean or better still get a new inside for it and lastly get your self a new helmet. but before you shove a helmet back on let your forehead heal and its gone back to normal don't forget to tell your coach why your out of action. ok good luck
what to do with rash from football helmet. forehead swollen and painful to touch