The effectiveness of any blend is dependent upon many factors. One such factor is the proportions of each essential oil used in the blend. This is vital to the effectiveness of the remedy as a whole.
Some essential oils that are blended together have a mutually enhancing effect upon one another so that the whole is greater than the sum of the parts. A good example would be the anti-inflammatory action of Chamomile which is supported by being mixed with Lavender.
When blends work in harmony together, the combination is a “synergy,” and every Aromatherapist wants to create a good one.
There are some things which should do in order to create a good synergy. One of these things is that you must take into account not only the symptom to be treated but also the underlying cause of the disorder, the biological, and the psychological or emotional factors involved.
This is why individual prescriptions are preferred over the mass produced “synergies” on the market today. Each blended essence is made for an individual’s physical requirement, as well as, their emotional.
Essential Oils are also grouped together according to their common constituents such as camphoraceous oils containing a good percentage of cineol (members of the Mytacease group such as eucalyptus, tea tree, cajuput and myrtle.
Some essential oils such as rose, jasmine, oak moss and lavender seem to enhance just about any blend.
Some combinations of essential oils have an inhibiting power over one another. You must learn the character of each essential oil before attempting blends with them.
It was a Frenchman named Piesse who instigated a new approach to classifying odors. He transformed the fragrances into corresponding notes. Together, these notes formed a balanced chord of harmony when blended together.
Each essential oil is classified according to what Piesse believed to be that oils’ dominant character.
A well-balanced perfume is said to contain the elements from each of these different categories, the quantities of each determining whether it is a heavy oriental type or a light floral aroma.