I have a client who flat irons her hair almost everyday. Her sides are so dry her hair is breaking off. I told her to give her hair a break. She doesn’t like her hair not flat ironed. She wants to keep her hair long but her sides are gradually getting shorter. The next thing I told her she could do is put some extensions on her sides. I would just be putting in some on her sides to match her back, so her hair doesn’t end up looking bi-level. This is one way if your sides are fine or thin to make it appear fuller. You are not looking at an expensive amount of money to put a few on your sides.