The Scientist: Temitayo Ogunleye, M.D., a dermatologist and assistant professor at the University of Pennsylvania
It’s a good idea to vary up the location of your ponytail—high, low, crown, side—to keep from abusing the same hairs in the same way, over and over. Even if you don’t damage the hair at the roots, you can break the shafts where the fastener rests day after day. As far as what kinds of ponytail holders to use, the most important thing is to have a fabric covering over the rubber of your rubber band, to decrease snags. If the elastic becomes exposed, toss it and use a new one. Flat ribbon elastics are popular these days and might benefit your hair by distributing the tension more than traditional hair ties.
Finally, if your ponytail feels too tight, it probably is. They say beauty is pain, but too much tugging on your scalp irritates nerves and can cause headaches. That’s not pretty, no matter how good your top knot looks.