Most people don't think to trim their eyebrows when doing at-home brow maintenance, but it can make a world of difference. Use a scissor made specifically for trimming eyebrow hair, like the Joey Healy Precision Brow Scissor ($28). "The best way to do it is to snip randomly at the ones that are absolutely the longest," Healy said. "The key to trimming is to trim one hair at a time at an angle. Never trim in a straight row across. Your brow ends up looking very blunt and stubby."