Chapter 13 447 have to devise products for a global market. This requires an understanding of the morphological differences in hair types based on race and how styling polymers behave due to these differences. Hair of various ethnic origins has respectively different diameters, intercuticular spacings, distribution of ortho and para cortex, and degree of curl and twists or kinks. This gives hair of different types particular mechanical properties that must be counteracted when fixing the hair in a particular shape with a styling polymer. Therefore, based on the market need for products designed for a multicultural population, existing polymers will need to be differentiated to be applied to certain hair types, and when new molecules are synthesized for styling, hair morphology will be an added factor in their design. The scope of future research will be to fulfill the needs of styling hair of different ethnic origin by designing novel molecules and implementing new methodologies. Conclusions Creating a styling product requires understanding that this is a multivariable system. Numerous variables must be considered, including the physical and chemical nature of the fixative polymer, formulation variables such as rheology, application properties of the formulation, the morphology and chemistry of hair, the polymer- fiber composite interaction, the nature of the mechanical properties of the hair (notably in the differentiation of various hair types), humidity effects, application of styling tools, effects of product regimens, and finally the resultant style one wants to achieve. Unfortunately, all of these variables are interrelated so that many times adjusting one variable will result in an unexpected change in another. One must keep in mind that studying multivariable systems is complex several variables need to be studied simultaneously to see interactive effects. Fortunately the science and technology of hair care ingredients and methods have advanced so that the formulation chemist has many tools to fully study and understand a given system. Only with this full understanding of hair on a molecular level, a morphological level in the realm of the fine structure of