But there's one thing you should know. Unfortunately, the myth that cutting your hair will make it grow faster is just that — a myth. As celebrity stylist Harry Josh told Byrdie, "Trims are not going to make your hair grow faster. It keeps the ends clean, but it doesn't accelerate growth at the root." He continued, "The misconception grows from the idea that trims remove damage and breakage at the end, but, honestly, if you're suffering from a lot of breakage, you're probably coloring, heat-styling, or just living a lifestyle that is prone to that kind of damage." So if you really want to give your hair room to grow, you'll have to cut those damaging habits, not the hair.

If in doubt about how often you need to cut your hair (or how long you can wait to cut your hair), talk to your hairstylist the next time you're in the salon. They probably know your hair better than you do.