Thickeners are used in many personal care and cosmetic formulas to increase the consistency, volume and viscosity of a formula. Some thickeners also have emulsifying and gelling properties. There are natural and synthetic thickeners from different sources with different molecular structures and they can be liquid, solid or polymers. Polymers can also be used as gel builders, fixatives, styling agents, conditioners, pearlisers, emollients and film-former’s.