Cosmetics are chemically mixed substances made from natural, synthetic or extracted substances with different effects, processed through production procedures such as heating, stirring and emulsification. There are three Main Propellant Chemicals Used in Cosmetics, namely, 2-Methylbutane (CAS 78-78-4), Dimethyl carbonate (CAS 616-38-6 ), Pentane (CAS 109-66-0).