It is usually good for liver cancer patients’ hair to turn black after treatment. Liver cancer itself is a consumptive disease, patients usually suffer from malnutrition, such as low protein; in addition, they usually need to be treated by chemotherapy, radiotherapy and drugs, which usually affect the function of hair follicles and can cause hair loss and turn white. After chemotherapy, radiotherapy and drug treatment, the cancer cells in liver cancer patients’ bodies are partially killed, so the liver function improves and nutritional condition slowly recovers; melanocytes grow and reproduce again, and melanin secretion in the body increases, so hair grows and becomes black. For liver cancer patients whose hair turns black after treatment, it is usually a positive sign and they should keep optimistic and continue treatment. It is recommended to go to a regular hospital to evaluate the condition and follow the doctor’s instruction to cooperate with the treatment, and do not use medication on your own, so as to avoid delaying the condition.