Characteristics of Essential Oils 1. They are highly volatile, which means they readily evaporate. Each essential oil has its own volatility rate, which is measured on a scale of 1 to 100. They have a consistency more like water than oil, some oils are more viscous than others are, e.g. Vetiver is very thick while lavender is more like water. They are clear in color with few exceptions.
Essential oils are soluble in alcohol, ether, and fixed oils.
They are not soluble in water. Most essential oil is antibacterial. The power of penetration through the skin is great. The time of absorption is between 20-70 minutes and varies depending on the fat content of the individual. Some essential oils are adaptogenic.