Brushing is also a great way to control oil. To control oily hair through brushing, simply brush your hair for 10 full minutes before showering. Be sure to scratch your scalp with each stroke of the brush. When you are done brushing your hair will be disgustingly oily but you'll wash that all away in the shower. Seriously this was the ONLY thing that worked for me. I would wash my hair in the morning and by lunch time my hair would start to look oily at the roots, but when I started brushing before washing, it released all of the oils and it took my body a while to replace them, so I was able to stay oil free all day.