Vocabulary: I'm going to the hairdresser? or Isn't it hairdresser's

[ElvisFannetjeh]

This is something I have been in doubt about myself.

Is this a good sentence?

I'm going to the hairdresser?

Isn't it hairdresser's

[Planta]

Hello,
You can use either "I'm going to the hairdresser" (the person, the professional) or "I'm going to the hairdresser's (salon)".
I would make that optional "salon" explicit in formal writing, if I were to use the possessive.

Shorthaired cheers!
Planta.