How often should you cut long hair?

It all depends on the rate of your hair growth and its condition and as to how long you want to keep it. (long hair can be anywhere from shoulder length to waist length and anywhere in between) If your hair grows slowly, once every eight or ten weeks should be enough to just trim off the ends. If you hair grows rapidly, and you want to keep it a certain length, you have to judge for yourself when its getting too long. However all long hair needs conditioning at the ends. This avoids split ends, and no matter what the hair product manufacturers advertise, there is no cure for split ends except cutting them off.