Underarm odor after hair removal may be caused by poor local hygiene or infectious factors. 1. Poor local hygiene: If you use hair removal creams and shaving knives to remove hair, because the sweat glands have not been destroyed, they will continue to secrete sweat, and if you do not pay attention to hygiene, it will also cause odor in the underarms after hair removal. 2. Infection factors: in hair removal, the local skin damage, or hair removal after sweat can not be discharged in a timely manner, may lead to a large number of bacterial growth, causing bacterial infections, decomposition of metabolites, but also make the armpit odor, may also be accompanied by itching, pain, redness and other symptoms. If there is odor in the underarms after hair removal and other abnormal manifestations, it is recommended to consult a doctor for examination and treatment to avoid other complications.