Except some essential oils such as pure rose, myrrh, chamomile and jasmine, most of pure essential oils are light or yellowish in color. If the color is dark, it can only show that the quality of this essential oil is not high. It is most likely that colored base oil or mineral oil is added, so it does not volatilize, just like oil stains. In addition, most of the essential oils volatilize quickly, and basically disappear after a period of time, and basically do not adhere to clothes, so what remains on clothes should be the base oil. To wash off the oil, wash it as soon as possible. The shorter the time, the easier it is to wash off. If it takes a long time, it should be soaked in washing powder water or soapy water first. Soak for an hour or two before washing. However, it takes a long time for oil stains to be completely washed away. It is ok to dilute them. For more professional information about essential oils and aromatherapy, please refer to the relevant information of Baidu Space in the garden next door.