Preparation of Liquid Foundation Using Magnesium Myristate.

This study aimed to investigate the effect of magnesium myristate as a multifunctional excipient in the formulation of cosmetic liquid foundation and aimed to compare it with liquid foundations that use the conventional excipients. The formulation was evaluated for different parameters such as organoleptic, pH, viscosity, spreadability, adhesivity, hedonic test, storage stability at room temperature, and determination of sun protection factor (SPF) value using ultraviolet (UV)-visible spectrophotometry. The results confirmed that the liquid foundation formulated using magnesium myristate showed better results and stability because there was no change in its physical appearance, pH, and spreadability in comparison to the liquid foundation formulated using conventional excipients. The liquid foundation formulated using magnesium myristate recorded a moderate SPF value (11.02), which can be practical for daily use, especially in individuals with tanned skin. Therefore, we concluded that magnesium myristate contributed as an emulsifier, opacifier, viscosity controller, and smoothening agent with good spreadability, coverage, texture, and better UV protection in comparison to the mixture of different conventional excipients. [ABSTRACT FROM AUTHOR]