Vitamin C is a large molecule and cannot go everywhere in your body, so it does its job while passing through. Another very large molecule is insulin. It is so large that it has problems getting into our cells and when it can no longer get into our cells, we get Type II Diabetes, or Non-Insulin Dependent Diabetes.
Having small molecules is also what produces the wonderful aromas of essential oils. Open a bottle and immediately you can smell them. If not, it is not a very good grade of essential oil. The molecules of a good, quality essential oil will hop right out of the bottle into your nose.
Oregano Oil is antibiotic, antiviral, contains antioxidants, and is an anti-inflammatory, containing four potent COX-2 inhibitors. Many oils are antibacterial, anti-fungal, anti-viral, anti-inflammatory and antioxidant. The antioxidant value in some essential oils alone is absolutely astounding. Dr. David Stewart PhD, (Healing Oils of the Bible), writes: "An ounce of Clove Oil has the antioxidant capacity of 450 lbs of carrots, 120 quarts of blueberries, or 48 gallons of beet juice." This is ONLY with a Therapeutic Grade Essential oil which is not something you can purchase at a hobby store.
Therapeutic Grade Essential Oils have an Electromagnetic Frequency. One of the differences between Western and Eastern medicine is that Eastern Medicine does not study cadavers (deceased human bodies) because Eastern Medicine was all about CHI, Qi or the Life Force: energy. There is no Life Force Energy in a cadaver or a garbage fragrance oil passed off as an essential oil.
Essential Oils and their healing benefits are not a "New" fad or "New Age," as the Bible is full of references to anointing and healing and ceremonies involving these oils.