Many people express concerns about oils causing allergic reactions. Pure essential oils should never cause allergic reactions. Here is an interesting article from Terry Tilaart to explain further:In Dr. Stewart's book entitled, "The Chemistry of Essential Oils Made Simple", he answers the question: "Are Essential Oil Allergens?" Consider the following facts: 1) Allergens are almost always composed of proteins or polypeptides, which are relatively large molecules. Th [...]