Traditional plants, as shown in Table 1, were purchased from local markets in Chiang Mai, Thailand. Since the plants were pur- chased from local market as a fresh form, they were confirmed by comparing with herbarium specimens at Faculty of Pharmacy, Chiang Mai University, to ensure that the plants used in this exper- iment were correct materials. Ethanol was used as an extraction solvent due to the semipolar property of this solvent, which soluble various phytochemical groups more than the use of polar solvents like water or non-polar solvents. Moreover, using ethanolic extract as an active ingredient in pharmaceutical and cosmetic products provided more safety and compatibility than other organic sol- vent. To extract the plants, they were separately dried at 45 ◦ C in a hot-air oven. Next, they were ground by using an electric grinder and extracted by maceration with 95% ethyl alcohol. The extracts were then evaporated to dryness under controlled pressure and temperature using a rotary evaporator (Eyela, Tokyo, Japan).