Abstract:
This independent study focused on the development of emulsion which contains coconut juice as a component. The study evaluated the appropriate maximum amount of coconut juice used in emulsion by evaluating physical properties and qualities of emulsion. Then an irritation test by volunteers and a product satisfaction using questionnaire method were conducted. From the research, the results showed that coconut juice can be used up to 80% in emulsion instead of water. It also found that the suitable emulsifier was Xalifin-15 due to its high resistance to electrolyte such as potassium and chloride which present in coconut juice. Moreover, the suitable preservative for the emulsion was Undebenzofene-c P-F due to its broad spectrum properties. For physical properties, the coconut juice emulsion was white, homogeneous, velvet and easy to spread with some scents of coconut. The emulsion possessed good stability after being tested by centrifugation, heating-cooling cycle and accelerated stability test. The product showed no irritation tested by primary skin irritation patch test in 10 volunteers. The satisfaction data showed very satisfy level from 25 volunteers. Therefore, this study demonstrated that coconut juice has potential for use as a component in emulsion and has the possibility for developing other cosmetic products. However, the efficacy of the product should be further investigated.