Aloe vera has the efficacy of clearing the liver and diarrhea (removing liver fire), diarrhea and laxative (using medicines with diarrhea effect to pass stools), killing worms and treating chancre, and does not have the effect of curing gray hair. Aloe vera enters the stomach, liver, large intestine meridian, can clear the liver and diarrhea fire, treatment of liver meridian fire caused by headache, dizziness, insomnia, irritability, irritability, epilepsy, convulsions, constipation, yellow urine. Aloe vera can be used as a laxative to treat constipation caused by heat. Aloe vera can kill worms and cure chancre, and can be used to treat chancre caused by abdominal pain, emaciation, yellowish color (yellowish and lusterless) and other symptoms, and can also be used externally to treat ringworm sores. It can be seen that aloe vera can not treat gray hair, the appearance of gray hair should be timely medical treatment, to avoid the wrong use of aloe vera aggravate the condition. Adverse reactions and contraindications are not clear, but it should be noted that pregnant women, weak spleen and stomach can not take. Taking aloe vera needs to be guided by a doctor, do not take it without authorization to avoid adverse consequences.