FORMULASI DAN EVALUASI SEDIAAN CLEANSING OIL MINYAK BIJI BUNGA MATAHARI (HELIANTHUS ANNUS L.) DENGAN VARIASI KONSENTRASI DECYL GLUCOSIDE

Abstract

Skin cleanliness is an important factor in preventing skin disorders, and cleansing oil is one of the commonly used facial cleansers. This study aims to determine the effect of varying concentrations of decyl glucoside on the physical stability and irritation potential of sunflower seed oil-based cleansing oil preparations. The research was conducted experimentally with five formulas containing decyl glucoside at concentrations of 2%, 4%, 6%, 8%, and 10% with a fixed oil composition. The preparations were evaluated based on organoleptic properties, pH value, homogeneity, viscosity, stability (cycling test), cleansing power, and irritation potential. The research results show that the increase in surfactant concentration affects the pH value, viscosity, and organoleptic stability of the preparation. The pH value increased with the concentration of surfactant up to 8.7 at the highest concentration (10%), while the viscosity value increased from the range of 315.32–400.46 cP to 321.47–456.97 cP after stability testing due to the weakening of surfactant strength and the formation of droplet aggregates. All formulas showed good cleansing power and did not show any signs of irritation based on the human patch test method conducted. Formula F1 with a concentration of 2% decyl glucoside shows the best stability because it does not experience changes in color, odor, phase separation, or sediment formation during the stability test. In conclusion, the surfactant concentration affects the pH value, viscosity, and stability of the cleansing oil preparation, and the use of decyl glucoside is considered not to have the potential to cause skin irritation in the applied testing method. It is recommended to conduct further research to optimize the formulation and evaluate the safety and effectiveness of long-term use.