Some ways of determining whether tea tree oil is pure or adulterated include smelling it, checking the label and assessing its purchase price by way of comparison with otherproducts that are known to be 100 percent pure. If the tea tree oil in question is significantly less expensive than these other products, it may have beenadulterated with other, cheaper substances during processing.
When checking the label, there are a number of things to look out for. Of course, the most obvious piece of information to look outfor is a statement of purity; however, this is not always recorded.Another basic piece of information that should be on the labelis the Latin name for tea tree, which is Melaleuca alternifolia. For 100 percent pure products, this willbe the only ingredient listed on the label.
Determining the purity of tea tree oil can sometimes be as simple as assessing the reputability of the brand. A good indicator that a brand can be trusted is a statement of the raw plant matter's country of origin.
Aside from adulteration with other ingredients during processing, the quality of tea tree oil may also be affected by the way in which the original plant was grown. Pesticides, fertilizers and soil quality can all affect the end product. Although not common practice in the United States, some brands of tea tree oillist organic certification, which is a good indicator of quality.