After chemotherapy for colon cancer, some patients may have hair loss, which is mainly considered to be the side effect of hair loss caused by chemotherapy drugs. Clinically, colon cancer patients are often treated with chemotherapeutic drugs such as oxaliplatin, capecitabine, fluorouracil, etc. After chemotherapy, the drugs will not only kill colon cancer cells, but also kill normal growth and active cells in human body, such as hair follicle cells in human scalp, which will lead to hair loss side effect of colon cancer patients after chemotherapy. However, hair loss of colon cancer patients after chemotherapy is generally a reversible side effect, after stopping chemotherapy, patients’ hair can still be regenerated, generally no special treatment is needed, so there is no need to worry too much.