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 '95% alcohol can form a protective shell on the surface of the virus to prevent the penetration of alcohol' can best support the above conclusion.