DESENVOLVIMENTO E AVALIAÇÃO DA QUALIDADE DE SÉRUNS FACIAIS CONTENDO EXTRATO DE Camellia sinensis COM AÇÃO ANTIOXIDANTE

Abstract

Green tea, a product from the harvest of Camellia sinensis leaves, is known for its health benefits, mainly due to flavonoids, such as catechins, which have powerful antioxidant and anti-inflammatory effects. These properties help neutralize free radicals, protecting the skin and promoting skin health. In response to the demand for natural cosmetics, this study sought to develop and evaluate the quality of facial serums with the commercial dry extract of Camellia sinensis. To this end, the formulas were designed, manipulated, and subjected to centrifugation resistance tests, determination of pH, conductivity, density, viscosity, spreadability and preliminary stability study. Furthermore, antioxidant activity using the DPPH radical scavenging method was performed with green tea extract. As a result, the antioxidant activity of the extract obtained an IC₅₀ of 200.30 µg/ml, higher than the positive control (BHT), with an IC₅₀ of 292.12 µg/ml. Samples remained stable after initial centrifugation. After undergoing the preliminary stability study and quality control tests, it was observed that they all maintained stability during the study. Variations in test results before and after freezing and thawing cycles, characteristic of the preliminary stability study, were minimal. This highlights the potential of these samples as an innovative product for the cosmetic industry.