However, it is best not to use a razor to cut hair, because the razor has too much horsepower. If you really want it, please buy it with the help of professionals. Ordinary razors will wear the hair cortex.
An electric shaver can shave your head, but it must be short hair, that is, hair that has just grown from the scalp. Only in this way can you shave your head with an electric razor. If it's very long hair and you have to shave your head, never shave your head with an electric razor. If you want to shave your head with an electric razor, you must shave your head and grow a little stubble before you can shave.