Solvent:
* Alcohol: The most common solvent in hairspray is ethanol (ethyl alcohol). It helps to dissolve other ingredients and evaporate quickly, leaving the hairspray residue on the hair.
* Other solvents: Sometimes, other solvents like isopropyl alcohol or propylene glycol are used.
Resins:
* Polyvinylpyrrolidone (PVP) and its copolymers: These synthetic polymers form the main "glue" that holds the hair in place. They create a flexible film that doesn't make the hair stiff.
* Other resins: Depending on the type of hairspray, other resins like vinyl acetate/crotonate copolymer or styrene/acrylates copolymer can be used for different hold levels and effects.
Propellants:
* Butane, propane, and isobutane: These are the gases that push the hairspray out of the can. They are flammable and should be handled with care.
Additives:
* Fragrances: To mask the strong odor of the other ingredients.
* Colorants: To give the hairspray a specific color.
* Antioxidants: To prevent the hairspray from degrading over time.
* Antistatic agents: To reduce static electricity in the hair.
* Conditioning agents: To add shine or moisture to the hair.
* UV absorbers: To protect the hair from sun damage.
Note: The exact composition of hairspray can vary depending on the brand and the specific type of hairspray. Some hairsprays also contain natural ingredients like panthenol or silk proteins for added benefits.