Reading an Essential Oil Label: Botanical Name, Plant Part, Country and Batch

A label is the one piece of information that comes with a bottle. This page explains what each part can tell you according to the sources we read. For supplement labels more generally, see Reading Supplement Labels.

Botanical (Latin) name

The scientific name says which plant. NCCIH gives Melaleuca alternifolia for tea tree oil and Lavandula angustifolia for lavender. [1][2] GBIF lists both as accepted names. [3] Common names are less precise. Lavandin is a different lavender plant (Lavandula × intermedia), and a case report about a child's poisoning is titled with "lavandin" while the poison center article describing it says lavender. [4][3] Look for a full two-part name, not just "lavender" or "rosemary".

Plant part

Oils from the same plant can come from different parts. NCCIH says tea tree oil comes from steam distillation of the leaves. [1] If a label gives no plant part, that is a gap you cannot fill from the label.

How it was made

An ISO norm quoted in a 2021 paper describes an essential oil as obtained by steam distillation, by mechanical processes from the epicarp (peel) of citrus fruits, or by dry distillation. [5] A label that says "essential oil" without a method does not tell you which. Citrus peel oils have sun-sensitivity cautions; see Phototoxicity: Citrus Oils and Sunlight.

Country of origin

Origin can matter to a lab. In one study, tea tree oils from Australia and China had similar marker percentages by conventional GC, which made them hard to tell apart without a more specific test. [5] A label's country of origin is a seller's statement; we did not read a source showing how it is checked.

Batch or lot information

NIEHS says the chemistry of an oil may vary from plant to plant. [6] A batch number lets a seller link a bottle to a particular lot. Proper evidence not found in the sources we read on what batch information must appear on a US essential oil label; we searched FDA and NIEHS pages and PubMed. See GC-MS Testing and Batch Reports Explained.

Ingredient list and "fragrance"

For consumer cosmetics, FDA says fragrance and flavor ingredients can be listed simply as "Fragrance" or "Flavor". [7] FDA also says it lacks the same legal authority to require allergen labeling for cosmetics as for food. [7] If you react to scented products, ask a clinician.

Storage and age words

NCCIH says reactions to tea tree oil may be more likely when a product is old or has been exposed to heat, light or air. [1] The National Cancer Institute says many essential oils do not have an expiration date. [8] We do not give shelf-life numbers. Poison Control advises keeping oils locked up, away from children and pets. [4]

Words that tell you little

"Pure", "natural", "organic" and "therapeutic grade" are covered on Essential Oil Quality and Labels. FDA says it has no regulations defining "natural" or "organic" for cosmetics. [9]