Incense sticks are widely used, especially in Asian countries, and often for religious purposes [1]. The reasons why incense stick are used because each religion believes to use it for connection with god in many holy ceremonies or it use for sending soul of the deceased. Thailand, in which incense sticks are used extensively, produces them in several provinces such as Ayutthaya, Chiang Mai, Chainat, Singburi, Pathumthani, Uthaithani, and Roi-Et. In this study, Roi-Et was chosen because it is one of the largest incense stick producers in Northeastern