摘要 : This study was aimed to formulate a cream (W/O emulsion) containing Bombax ceiba (stem bark) extract and evaluate its stability by exposing it to different storage conditions. The formulation was prepared using ABIL EM90 as an emu... 展开 This study was aimed to formulate a cream (W/O emulsion) containing Bombax ceiba (stem bark) extract and evaluate its stability by exposing it to different storage conditions. The formulation was prepared using ABIL EM90 as an emulsifying agent, liquid paraffin oil and water by heating the aqueous phase at 70- 75°C and the oil phase at the same temperature and then adding aqueous phase to oil phase with continuous stirring. This newly prepared formulation was stored for a period of 12 weeks at 8l,C, 25°C, 40°C and 40°C/75% RH (relative humidity) and assessed for any change in physical characteristics (color, liquefaction, phase separation) from time to time at certain intervals. The formulation presented better physical stability throughout the study period. Only slight organoleptic changes were observed in the samples stored at higher temperatures. Rheological observations indicated the shear thinning effect (pseudo plastic behavior) of the formulation having the value of flow index less than 1. Microscopy showed that the droplet size of internal phase was increased more in the formulations kept at the higher temperature (40°C). It can be said that newly developed cream containing B. ceiba extract exhibited good physical characteristics indicating its stability. The cream might be used as a skin care formulation for different cosmetic purposes. 收起