Won't the hair scratching your skin be worse for the acne though? About two years ago or so, i had really big hair, during the summer, and it did worse to my acne in the forehead, till someone said, it was because of the hair, it was irritating the skin. So i just pulled the hair back, like a raging football player homo, and sure enough, it started getting better.
But maybe it was because of the sun.