Hydroquinone formulations color change with stabilizing agent addition, as emulsion instability parameter

Authors

  • Maria Aparecida Nicoletti Universidade Guarulhos
  • Ellen Penteado Costa
  • Kleber Zimmermann Cosme Universidade de São Paulo

Keywords:

Hidroquinona. Estabilidade. Alteração de coloração

Abstract

In pharmaceutical manipulation area, many dermatological medical prescriptions with hydroquinone are associated to others actives like kojic acid and glycolic acid to get a faster skin-whitening. Hydroquinone has a strong chemical instability and, by the way, it is necessary the addition of stabilizing agents to extend the shelf-life formulation, besides the temperature has a strong influence on keeping the physical and chemical properties. The stabilizing agents have different performances depending on the formulation and their inclusion does not mean that will be useful to keep the formulation physical and chemical properties. So it is necessary to choose the best one. This study analyses the emulsions color keeping in the presence of different stabilizing agents, by itself or in association to other ones, besides the temperature influence. The results show sodium metabissulfite as the best employed stabilizing agent and the best temperature condition is when the samples are under refrigeration.

Author Biographies

Maria Aparecida Nicoletti, Universidade Guarulhos

Farmacêutica-Bioquímica (UNESP-Araraquara), Mestrado e Doutorado (USP). Professora Titular da Universidade Guarulhos junto ao Curso de Farmácia-Bioquímica, Professora Titular junto ao Curso de Farmácia e Bioquímica da Universidade Paulista (UNIP) e Farmacêutica Responsável pela Farmácia Escola (USP-Universidade de São Paulo)

Ellen Penteado Costa

Estagiária da Farmácia Universitária

Kleber Zimmermann Cosme, Universidade de São Paulo

Bolsista de Iniciação Científica da Farmácia Universitária - Departamento de Farmácia / Faculdade de Ciências Farmacêuticas / Universidade de São Paulo

Published

2009-06-01

How to Cite

Nicoletti, M. A., Costa, E. P., & Cosme, K. Z. (2009). Hydroquinone formulations color change with stabilizing agent addition, as emulsion instability parameter. Revista Saúde - UNG-Ser, 3(1), 16–22. Retrieved from https://revistas.ung.br/index.php/saude/article/view/256

Issue

Section

REVISÃO DE LITERATURA