is it dangerous to apply hair spray before curling it?
nope we use to do that in the 80"s with Aqua net
No but it might be a little difficult
Why would you put hairspray on before you curl your hair? Hairspray is supposed to hold your hairstyle in place once you have finished styling it. If you are looking for something to help you style the hair try styling gel or mousse.
Dangerous not really, healthy for your hair, definitely not.
It may burn it
Put it after.