Formulation of face wash gel containing Thai herbal extract self-microemulsifying system

Abstract

Keywords: Areca catechu L.; Curcuma longa L.; Garcinia mangostana L.; Oryza sativa L.; Face wash gel; Self-microemulsifying

Objectives: The present work aimed to prepare the face wash gel containing Thai herbal extract – self-microemulsifying system. It was evaluated the physical appearance and contamination test.

Methods: The Thai herbal extract compound: Curcuma longa L., Areca catechu L., Oryza sativa L., and Garcinia mangostana L. in ratio of 1:1:1:1, respectively was prepared by Dr.Chonlatid Sontimuang, Faculty of Traditional Thai Medicine, Prince of Songkla University. The Thai herbal extract was incorporated in self-microemulsifying system that developed by our research group. Then, it was homogenously mixed in face wash gel formulation: 10% w/w clear self-microemulsifying system, 8.34% w/w HPMC E5, 30% w/w glycerin, 0.05% w/w lauric acid, 0.15% w/w  triethanolamine, 1% w/w paraben concentration, and purified water qs.to 100%. The Thai herbal face wash gel formulation was evaluated for its appearance, pH value, and viscosity of both fresh preparation and stability tested preparation as well as the contamination test using both manital salt agar (Staphylococcus aureus) and MacConkey agar (Escherichia coli) contamination test.

Results: Thai herbal face wash gel formulation containing Thai herbal extract: the Curcuma longa L., Areca catechu L., Oryza sativa L., and Garcinia mangostana L. in ratio of 1:1:1:1, respectively based on self-microemulsifying system had a brownish yellow in appearance that was visually checked by researcher. It had a normal pH in range of 7 – 8 and good viscosity which ease to use and safe to contact with the skin. In addition, it had a good stability and no contamination of Staphylococcus aureus and Escherichia coli.

Conclusion: Prepared Thai herbal face wash gel formulation had good physical properties with safe to use. In addition, it will be developed as good herbal cosmetic products.