Can disposable razors only be used once?

Not necessarily. Some disposable razors have blades made of poor material, which may only be used once and are not comfortable enough to use. However, some disposable razors, such as Claude blades used in a hotel in Shanghai, are more comfortable to use and safer to shave. I brought it back from a business trip and used it many times. Therefore, whether it is disposable does not depend on the name, but on whether the quality of the shaving blade used is up to standard.