Most people really can't overuse a lip balm. The problem will occur, though, if you develop an irritation, sensitivity or allergy to one of the ingredients of the lip balm. Certain lip balms might have scents or fragrances, and these might lead to irritation because an inviting fragrance might make you more prone to licking your lips and then that act of licking and the saliva can cause some damage and irritation. It is also recommended to avoid lip balms that have ingredients like peppermint oil or menthol.