Your lip balm should not be something you are addicted to, but those who use Carmex lip balm have reported being unable to stop reapplying it on their lips. They have not really been able to figure out why, and there are quite a few strange theories.
Some rumors actually state that Carmex lip balm has glass shards that damage the lips, thus making you reapply lip balm again. This is not only illogical; it is also inaccurate. The real reason behind this perceived addiction may be an allergic reaction to one of its ingredients.
One of the ingredients may actually be irritating the lips, in the same way wool sweaters feel itchy. This ingredient, lanolin, is also found in wool and may be what people are reacting negatively towards. Other ingredients that may be the culprit are beeswax (the second-most common allergen), salicylic acid (which is used to treat acne), and benzocaine (which may lead to chapped lips to those allergic to it).
This allergic reaction may lead you to continue to reapply the lip balm and worsen the irritation. Thus, the cycle begins again until you feel like you are allergic to (or crazy about) your lip balm. If you suspect that this is happening to you, try out a different lip balm instead.