Most hairsprays are composed of industrial polymers, alcohol, plasiticers, surfactants, and hydrocarbons. The more common polymers are polyvinylpyrrolidine, and polydimethylsiloxane. In plastic hairsprays, they add in copolymers such as vinyl acetate,and maleic anhydride. For some more natural hairsprays, they use gum arabic, and gum tragacanth as the polymers instead. The plasiticer is aminomethyl propanol. The surfactant is Benzalkonium chloride. There are a few other ingredients, but it really depends on the hairspray for the other more specific ingredients.