Generally, the alcohol concentration used for disinfection is 70%-75%. This concentration of alcohol has the best permeability and the best antivirus effect, and if the concentration is higher, it will not be able to achieve the effect of disinfection. Therefore, the higher the alcohol concentration, the better the disinfection effect.
The statement 'High concentration of alcohol will stimulate the skin, absorb a large amount of water from the epidermis, and cause skin dehydration' can best support the above conclusion.