Alcohol can disinfect, thanks to its strong volatilization effect, alcohol, also known as ethanol, is an organic compound, the clinical application of disinfectant alcohol is a 75% alcohol solution, which can kill bacteria by coagulating bacterial proteins, as well as killing bacteria that grow inside the skin folds. Its ability to destroy bacterial cells is extremely strong, but irritation is also relatively strong, for some pain-sensitive patients, the use of alcohol to disinfect wounds is often very painful, and alcohol is generally not suitable for disinfecting with the eyes, nose and other parts of the eyes, because the mucous membranes in these areas are more sensitive, and irritation symptoms can easily occur. Clinically used antiseptic solution is also povidone-iodine, which has a wide range of disinfection, can form a protective film in the wound to protect the wound from bacterial invasion, so you can choose to combine povidone-iodine and alcohol, too painful wounds can use povidone-iodine alone.