AROMATHERAPY OILS
Oils containing standard components need to have a certain number of aroma chemicals that are usually contained within the oil. However there is no rule stating the chemicals must not be added in synthetic shape in order to keep to the standards created by the FCC for that particular oil. As an example, lemongrass essential oil needs to include 75% aldehyde to keep to the FCC standards but that aldehyde can be from a chemical refinery rather than from lemongrass. FCC oils, often are said to be food grade that seems to say that they are natural oils which is not essentially the case.
Pure essential oils that are suitable for aromatherapy are branded as therapeutic grade, although when in countries where the industry isn’t governed, therapeutic grade is built upon industry agreement and is not a regulated class. Some aroma therapists use this to help then make ambiguous claims about the beginning and even substance of the oils they use.
As well as, claims that an oil's purity is assessed by gas chromatography or mass spectrometry have limited worth, as this type of testing shows that various chemicals show up in the oil. A lot of the chemicals that occur naturally in essential oils are produced by the perfume industry and adulterate essential oils as the cost less. There is no way to tell between these naturally occurring chemicals and the synthetic additives.