While some of these products do have the potential to damage hair, in most cases they will not affect hair follicles or growth cycles when used correctly. However, overuse, misuse, harsh chemicals and relaxers can damage hair follicles and affect growth. These products can cause the hair to break and fall out when used too much or incorrectly. Using them less will most likely result in less damage and breakage. Hair accessories like clips, pins and rubber bands can break hair when holding the hair too tightly.