Many people never think about what happens when they put a bun in their hair and wrap it up tightly. It feels good to have your hair out of your face so you can see and work hard. Yet, when your hair is pulled out because it is bound too tightly, this can cause hair loss that may include some damage to the hair follicles. Protecting your hair means avoiding any damage to your hair follicles. If you do not do so, you may find that you have hair loss or hair thinning. Here is what you need to know about these forms of alopecia.