The use of alcohol by men to scrub the glans can lead to necrosis of the mucosal epithelium, resulting in changes such as injury, roughness, flushing, congestion, and even fissures in the glans mucosa. Because alcohol is an organic compound brewed from food, in the clinical medical disinfection alcohol is 75% concentration, able to use medical alcohol for disinfection, mainly to denature the proteins in the bacterial cells to achieve the purpose of disinfection. If you use too high a concentration of alcohol can cause damage to the mucous membrane of the skin, resulting in skin discomfort and pain, allergies. It is recommended to pay attention to the concentration of alcohol when using alcohol for disinfection and to choose medical alcohol, and to use it under the guidance of a doctor to avoid side effects. It is also important to pay attention to the amount and frequency of alcohol when using medical alcohol for disinfection, as frequent wiping will definitely cause damage to the mucous membrane of the skin, and it is not recommended to use alcohol on the glans if not necessary.