Is it okay for girls to work in hair salons?

Yes, there is nothing wrong with it, except a bad reputation.

Some people think that girls who work in hair salons are looked down upon like Miss do, but if they really know this industry, they won't say so. The treatment in hair salons is not very good. Working in hair salons is harmful to health, such as adding economic pigments chemically. Don't work in a hair salon for a long time.

I suggest that you'd better find some sales jobs, such as selling clothes and mobile phones, instead of working in a hair salon. Doing sales can make you contact more people and exercise your eloquence and courage.