Polysorbate 20 is naturally derived from Lauric Acid (coconut oil) and is a water-soluble, oil and water emulsifier. It is used as a wetting agent, viscosity modifier, anti-stat, stabilizer and dispersing agent. Commonly used to emulsify essential oils and (oil-soluble) fragrances.
Blend together 2 parts Polysorbate 20 to 1 part essential oil or oil-soluble fragrance, before adding to the rest of your ingredients.