Final answer:
Hair spray is used to hold a hair style in position; it contains polymers for stiffness and is applied as a mist with aerosol or pump nozzles.
Step-by-step explanation:
The type of styling product that is applied in the form of a mist to hold a style in position is hair spray. Hair spray is designed to stiffen hair into a certain style and is typically used to maintain hairstyles for long periods. It's sprayed onto the hair using a pump or an aerosol spray nozzle to distribute the product evenly.
The key active ingredients in hair spray are polymers, which provide the stiffness and hold without breaking the hair strands. Solvents in the hairspray enable the delivery of these polymers by carrying them in a solution.