I want to discuss essential oils as ingredients since they have so many beneficial actions on the skin. I have been using products with these natural essences in them for almost 30 years. Their effectiveness is powerful, and I have many clients who have turned their skin around through the use of essential oils. What are essential oils? They are aromatic liquids that are found in certain plants and flowers. Essential oils are fragrant essences that are produced in specialized glands within the plant as part of the process of photosynthesis. Essential oils are volatile , like gases, and have a very thin viscosity—similar to water. (Actually, essential oils, by definition, are volatile . Fatty oils are termed fixed .) If you put a drop of pure essential oil on your skin, it will evaporate almost immediately, whereas any fatty oil (like olive, wheat germ, or mineral oil) will remain on the surface with little penetration. Essential oils are lighter than water , so they...