Cold medicine. Most of the common cold medicines have paracetamol, also called acetaminophen, which can cause liver damage because our normal liver is very strong and can usually metabolize it easily. But if the liver itself is not good or has cirrhosis of the liver should pay attention and take less of all kinds of drugs, especially Chinese medicine. Because most of the drugs are metabolized from the liver, more or less damage will be caused to the liver, if patients with underlying liver disease, must be used with caution, unless there is a necessary therapeutic use of drugs, many drugs are caused by liver damage. In addition, all kinds of food additives should also be noted, long-term consumption of a large number of food additives is also an important factor in liver damage, including special attention to the use of food additives containing carfagen may cause severe liver damage, must be used with caution. Smoking. Smoking is not only damaging to the lungs, it is also a huge damage to the liver. Tobacco tar, nicotine and other toxic substances contained in tobacco, first absorbed into the blood through the blood vessels of the lungs, and then metabolized through the liver, which will cause liver damage in the long run, causing the possibility of liver fibrosis, and also increases the risk of liver cancer. Cosmetics. Many cosmetics contain mercury. Mercury can enter the body through the skin and cause damage to the liver, and long-term damage to the liver will lead to the possibility of liver fibrosis. Among them, especially lipstick, poor quality lipstick contains a large amount of toxic substances, through the mouth into the gastrointestinal tract absorption into the blood, the severity of more dramatic, it is recommended to use cosmetics as little as possible.