Does the United States recognize China's hairdresser certificate?

No, but American hairdressers don't need a certificate either. I've never seen her get a haircut. ...

So it is more practical for you to use this certificate to accumulate working experience in China, so that if you want to find the same job in the United States, you can write that you have X years of hairdressing experience and so on.

Practical experience is more useful than any certificate (from China), because Americans don't know the assessment criteria of your certificate. And hairdressers not only cut their hair, but also have customer service and so on.

Language is another matter. Although many immigrants mainly rely on domestic customers, English is also very important.