Simply, say the Grupo Mayan experts, it is the usage of essential oils as a treatment or a prophylactic for particular diseases. This could occur due to two modes of actions. The first mode is the psychic route where the essence of the oil affects the brain causing a desirable effect. The second mode of action is directly through the physical properties and features of the essential oil itself. Aroma therapists always claim their full knowledge about the different effects of the aromatherapy but this should be proven as some studies had shown positive results.

In the United States of America, doctors always emphasis on the usage of essential oils in massage therapy and in best cases aromatherapy could be considered as a side treatment and in some bad cases it could be considered as a fraud.

Grupo Mayan experts say that back in the European continent and especially in France, where the aromatherapy was discovered, the essential oils are treated as regular medicine and some of them could not be bought except with a prescription. In France, they use a method similar to that used with antibiotic cultivation to determine the suitable essential oil. They cultivate a piece of infected tissue in a Petri dish, after that the culture is divided into different Petri dishes and nourished with certain types of agar according to the tissue itself. After that a different essential oil is added to every dish to monitor the effect that occurred. The best effect is the prevention of microorganism growth. Grupo Mayan experts tell us that this is called an aromatogram.

Even though many countries are dealing with aromatherapy as a regular medicine, say the Grupo Mayan experts, it is still not recognized as a science in different eastern and western countries.

The different modes of action of essential oils and volatile oils could be demonstrated as follows. The scent could be detected by brain and different scents have different effects. When you administer the oil itself topically, it could kill germs and microbes according to its pharmacological effect. Some physicians prepare an oral drug from the essential oil by diluting it with a ratio of 1 to 10 or 1 to 20 in mineral oils to improve immunity.

The materials included in this process:

• Essential oil: is an oil of plant origin that possesses a distinct aroma and mainly it is extracted through steam distillation and in some cases through expression, say Grupo Mayan experts.
• Absolute: is the essential oil purified from a flower or a bud of a plant with the addition of a strong solvent like alcohol when used to excrete “rose absolute”
• Phytoncides: they are bactericides with a plant origin
• Infusion: it is the liquid solution results from dipping a plant in water for a part of time.
• Carrier oil: it is an oil of plant origin to dilute the essential oil in order to be used topically.