Glicerin, a by-product resulting from the production of biodiesel, was the subject of study in the master's thesis of chemist Elvira Aparecida Sanches Bizarro. The research was presented at the Chemistry Institute (IQ), being supervised by professor Fernando Galembeck. “Glycerin production tends to increase a lot due to several factors. As it is a by-product that can be used, I was interested in investigating its application in the cosmetic area, more specifically in hair cosmetics”, reveals Elvira.

The author of the research explains that the increase in biodiesel consumption can generate a large volume of glycerin and, therefore, alternatives that point to possible applications in industry are welcome. Another abundant source of glycerin will be the installation of the company Oleoquímica do Brasil, in Camaçari.

The work had a first stage that consisted of obtaining phosphated ethoxylated glycerin, since the researched literature indicated phosphates as products that do not harm the skin and hair. In the second stage, the product was characterized.

During this process, tests demonstrated that phosphate ethoxylated glycerin is a completely water-soluble product with a high degree of ethoxylation, and can be recommended for leave-in creams and conditioners. According to the researcher, glycerin could help retain moisture in the capillary and dermal surfaces, increasing hydration.

Further work must be done to confirm the effects of phosphate ethoxylated glycerin when used as a cosmetic raw material. The tests include evaluating the product formulated on strands of hair.