If TF lipstick goes bad, it may produce oily smell. This is because the main ingredients of lipstick are oil and toner. If oil and other ingredients are oxidized, it may produce a pungent smell. In addition, if lipstick is left for a long time, it may also lead to changes in the texture, color and smell of lipstick. Therefore, it is recommended not to use deteriorated lipstick, so as not to cause problems such as lip allergy or cheilitis.