The aim of this research was to study the effect of stearic acid and TEA concentration on physical and chemical properties of cosmetic emulsion using coconut oil as raw material. The emulsion was made by emulsification of water phase (glycerin, aquadest and TEA) and oil phase (coconut oil, stearic acid, lanolin, cetyl alcohol). To determine the effect of stearic acid and TEA concentration on properties of emulsion, these components were added in various concentrations. The physical and chemical properties of emulsions were then measured such as pH, viscosity and droplet size. The result showed that the viscosity of emulsions was increased by increasing stearic acid concentration, on the other hand the droplet size decreased. The pH of emulsion was in the range of 7. 58-7. 96. If the TEA concentration was increased, the pH and viscosity were also increased, but it caused a decrease in droplets size. These mean that stearic acid and TEA concentration affected the physical and chemical properties of cosmetic emulsions.