ESTABILIDADE DE EMULSÕES FRENTE A DIFERENTES TÉCNICAS DE HOMOGENEIZAÇÃO E RESFRIAMENTO.

In manipulation pharmacy, emulsions are the ideal vehicle for various cosmetic and pharmaceutical applications, because they bring aesthetic and functional qualities, such as solubilization of hydro and lipophilic components. Emulsions must demonstrate physical stability under different conditions, such as variations in temperature and stress induced by vibration during transport. They should also maintain the proper consistency to get a good feel on the skin, spread and release the active ingredients. The stability study of cosmetic products provides information on the performance of the product, indicating their degree of stability in a given time interval, compared to the environmental conditions that can be submitted from manufacturing until the end of life. The purpose of this study was to verify the stability and organoleptic characteristics of two emulsions, anionic and non-ionic, after preparing using different techniques of homogenization and cooling . To perform the stability tests were used two formulations, an anionic emulsion, Lanette Cream and a non-ionic emulsion, the cream polawax. After weighing the raw materials, heating and mixing of the phases, homogenization was performed in four different ways, as the temperature and agitation speed, reaching a temperature of 40 C. After being tested for stability, there were