Red itchy skin after shaving may be skin allergies caused by contact dermatitis, it is recommended to avoid shaving again, the application of cold saline and other ice packs on the skin, severe cases need to be under the guidance of a doctor to use topical medications and oral medications. Some patients are allergic to the nickel content in electric shavers, or allergic to the cleaning agents applied during shaving, which can lead to red, itchy skin after shaving. When some patients shave improperly, they may damage the skin. Skin breakage and excessive friction can increase the absorption of nickel, which can cause skin inflammation if it is followed by bacterial infection. Red itchy skin after shaving should immediately stop shaving, until the symptoms improve, learn the correct way to use or replace the razor before resuming shaving. After shaving, if the skin appears red, swollen, itching and other symptoms, can be used externally with ice saline cold compress, play a calming and soothing effect. If the patient itching is serious, can be used under the guidance of the doctor external hydrocortisone butyrate cream and other glucocorticosteroid cream, oral loratadine tablets and other antihistamines anti-allergy treatment. If the patient shaving site secondary bacterial infection, can be prescribed topical mupirocin ointment, fusidic acid cream and other antibiotic ointment, oral cephalosporins and other sensitive antibiotic anti-infective treatment if necessary. Red itchy skin after shaving may also be caused by other diseases, it is recommended that patients go to the regular hospital in a timely manner, after a clear diagnosis of standardized treatment, while avoiding scratching, reduce skin irritation, do not use their own medication, so as not to aggravate the condition.