blow drying

How do you straighten cowlicks? I've got them in the front (above forehead). My hair is fine yet abundant (to the point that it appears very thick) with some natural waves. I have to straighten it or else it gets wild and wavy. I use very large brushes but I can't seem to get my cowlicks under control.Help me please!P.S.I hate to use styling products. They make my hair heavy since it's so fine.