I put cold water and unscented lotion on my face and the hives are starting to go away, my face still feels super hot and its a little swollen still but its getting better so I think it'll go away on its own, I hope! Its mainly just my cheeks and chin that have the hives now not my entire face
You should see a doctor but I'm allergic to something (idk what) and my lips swell like balloons I use ice to make it come down a little. Maybe a cold towel on your face will help bring it down.
I would go see a doctor about the hives they can recommend something that is safe