This will cause hair loss or weakness at the part line, or even recession. Our hairline can be a very weak area, so repetitive stresses like constant brushing or even running fingers through the hair in the same place can be detrimental. Donnie Vasey, a global stylist for Éprouvage suggests, "Begin to wear your hair parted one way, until that first 'bad hair day.' When it's greasy, limp, or you're just not feeling it—flip your part and add add Éprouvage Thickening & Plumping Spray ($18; ulta.com) to your normal hair-care routine. You will find a whole new world of volume and body, and won't get as much breakage or fall out." Say goodbye to pesky fly-aways!