Hair Products

Hairspray : It is a product which is sprayed on to hair to keep it in place. It was invented in the 1940's. Hairspray is made up of an array of simple industrial polymers. This includes polyvinyl acetate and copolymers of polyvinylpyrrolidone. Then the mixture is modified so it gets the physical properties wanted such as foaming. The mixture is modified with plasiticers, surfactants and other agents. The main ingredient of hairspray however is solvents needed to solubilize the mixture. This solvents include ethanol and tert-butyl.

Hair Gel : It is a product used to mould hair in to a particular style. Modern hair gel was invented in the 1960's but hair gel can be dated back to almost 3500 years ago. Cationic polymers is the  main ingredient of hair gel. The positive charges in the polymer cause it to stretch which causes the gel to be viscous. Another main ingredient is water which evaporates once you apply the gel leaving you with a sticky film around your hair.

Images from http://www.freewtc.com/buy-taft-hairspray-37451/ and http://www.besthairgelformen.org/tag/hairstyling-products/ respectively.
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