Hello Ladies,
My hair is about 20in long and I'm familiar with Bunning. It does help your head to retain hair. But, it should not be a tight bun. Tight buns tear out the hairline and nape. A good technique to use to help avoid tearing is to part the hair in the top and wear the bun low on the back of the head. Also, twisting or braiding the ponytail before bunning. It helps the ends to retain more of the conditioning products you may use.