By far, the simplest and easiest hairdo for women with long, frizzy hair is long and cut straight across the ends, with no layers. If your hair is frizzy, do not brush it at all. Immediately after showering, use a light mousse and comb through and twirl with your fingers. Then scrunch up from the bottom and let your hair dry naturally. If your hair is curly or wavy, you'll have a natural look that women with thin, straight hair envy. The mousse will keep frizz in check and the evenly cut tips make the cut easy to maintain. Trim split ends every few weeks to keep hair tame and lines clean.