Comparação da atividade antioxidante e estudo de estabilidade entre cremes hidratantes, contendo extrato de moringa oleífera e BHT

Abstract

Cosmetics have been used since antiquity, applied for beautification, hygiene, therapeutic form and to treat the skin. A cosmetic to treat the skin is the moisturizer, this prevents water loss from occurring and with this does not have dryness. Moisturizers are composed of emulsifiers, emollients, umectants, sequesters, stabilizers, water, fragrances, dyes, active, among other ingredients, some of these actives are ceramides, hyaluronic acid, urea, glycerin and antioxidants. Antioxidants instill oxidation and fight oxidative stress, help slow aging. They can be natural, in fruits, flowers and leaves, or synthetic. An example of where one has natural antioxidant is in oleiferous Moringa, this is rich in vitamin C and E, polyphenols and carotenoids, already an example of synthetic antioxidant is BHT. This work aims to develop a moisturizing cream, which has a good moisturizing action, with a more natural composition and that does not cause irritations the people who will use, the comparison of antioxidant activity and also stability, between two formulations of moisturizing cream containing a concentration of 1.5% and another with 3% of a natural antioxidant, that in this case was used the hydroalcoholic extract of the leaves of Moringa oleífera, and a formula of moisturizing cream containing a synthetic antioxidant in concentration of 1.5%, the BHT. The preliminary stability test was performed at 0 and 15 days and accelerated in time 30 and 70 days, where the organoleptic characteristics, pH, density, centrifuge test and colorimetric analysis were analyzed in the creams, using the DPPH radical sequestration method.