Grades of Essential Oils Explained: Grade Claims, Supplier Documents, and Limits
Short answer: “Therapeutic grade,” “food grade,” “cosmetic grade,” and “pure” are not interchangeable proof of quality or permission. A grade word has meaning only when the exact supplier document defines it for a named material, specification, intended use, and market. Check the label, lot, COA, SDS, analytical record, and claim instead of treating a marketing grade as a universal standard.
Ask what the grade is supposed to mean
Copy the exact word, capitalization, location, and surrounding claim. A seller may use “grade” to describe a specification, a market segment, a marketing position, or a product line. Ask whether the term refers to identity, purity, compositional limits, intended use, manufacturing controls, certification, or only a promotional description. Without that definition, the word cannot carry a technical conclusion.
“Food grade” is not a blanket statement that any product may be added to food. “Cosmetic grade” is not a safety guarantee for every skin area. “Therapeutic grade” is not an FDA approval or proof of clinical effect. IFRA standards and certificates also have a defined scope; they do not turn a raw material into a universal grade or approve every finished-product use.
Separate identity from quality claims
| Question | Record needed | Why a grade word is insufficient |
|---|---|---|
| What material is it? | Botanical or chemical identity, plant part, extraction, supplier, lot, and label. | A grade name does not identify species, chemotype, fraction, or dilution. |
| What is in this lot? | Specification, COA, analytical method, constituent limits, and date. | “Pure” does not reveal a complete compositional result. |
| What may it be used for? | Finished-product category, label, intended route, market, and directions. | Use is governed by the exact product and claim, not a generic grade. |
| What outcome is promised? | Advertisement, claim, evidence, population, endpoint, and substantiation. | A quality word cannot prove a therapeutic or performance effect. |
Use technical records at their scope
NIST’s Chemistry WebBook is a reference-data resource for identified chemicals and spectra. It can support an analytical comparison when the material and method match; it is not a retail quality certificate. FDA cosmetic and aromatherapy guidance keeps intended use and claims separate from a product name. IFRA guidance explains category and certificate responsibilities. Together these sources support a record-based review, not a universal grade ranking.
For a supplier comparison, request the exact label, botanical identity, plant part, extraction method, carrier or dilution, lot, COA, SDS, specification, storage conditions, and test method. If the supplier declines a field, record it as unknown. A third-party seal or “tested” statement can be documented, but ask what was tested, against which specification, by which laboratory, and for which lot.
Build a grade-claim worksheet
- Copy every grade or purity word and the exact claim surrounding it.
- Identify the material, species, plant part, process, dilution, supplier, lot, and intended use.
- Match COA, SDS, specification, analytical method, and certificate to the same lot.
- Separate identity, composition, manufacturing, intended use, regulatory category, and efficacy questions.
- State what the record supports and what remains unresolved; do not call a grade a treatment or safety approval.
For a purchasing or formulation decision, compare like with like: the same botanical or chemical identity, plant part, extraction or manufacturing process, concentration basis, lot, test method, and finished-product category. A certificate issued for one lot, a fragrance blend, or a supplier’s internal terminology should not be silently transferred to another bottle. Record the document version and issuer, then send unresolved identity, quality, or compliance questions to the responsible technical reviewer.
Also separate a missing document from a failed test. “No COA supplied” means the record is incomplete; it does not prove contamination or poor quality. “Pass” on one constituent or method does not prove every specification, stability condition, or intended use. Keep those conclusions narrow so a purchasing note does not become a safety or therapeutic claim.
Where this page stops
This page does not create an official grade system, rank brands, certify purity, authorize food or therapeutic use, or provide a dose or route. A grade word is not a substitute for the exact product record, applicable label, current standard, and qualified technical or regulatory review.
Documents to collect for a grade claim
Use these records to test what a grade word means for one material and lot; do not treat them as a universal ranking.
- Exact label and every grade or purity claim
- Botanical or chemical identity, plant part, process, supplier, and lot
- Specification, COA, SDS, analytical method, and certificate
- Intended-use, market, category, label, and advertising record
Sources consulted
1. Cosmetics Labeling Claims
U.S. Food and Drug Administration · fda.gov
- Published or revised
- Living FDA page checked 2026-08-28
- Date checked
- 2026-08-28
- Relevant section
- Cosmetic claims, intended use, FDA approval boundaries, and drug claims
- Supports
- Why a grade word does not replace the exact product label, intended use, claim, or applicable legal category.
- Does not establish
- That FDA has approved a therapeutic grade, that a cosmetic claim is a drug approval, or that grade predicts purity or safety.
- Recheck when
- Cosmetic claim, product category, label, market, or FDA guidance changes.
2. Aromatherapy
U.S. Food and Drug Administration · fda.gov
- Published or revised
- Living FDA page checked 2026-08-28
- Date checked
- 2026-08-28
- Relevant section
- Aromatherapy intended use, natural ingredients, safety, and claims
- Supports
- Why terms such as therapeutic, pure, or natural need to be tested against the product’s intended use and evidence rather than accepted as grades.
- Does not establish
- A universal grade system, efficacy, safety, purity, or route permission for a named oil.
- Recheck when
- Aromatherapy claim, product, label, market, or FDA guidance changes.
3. Understanding the IFRA Standards
International Fragrance Association · ifrafragrance.org
- Published or revised
- Living IFRA guidance checked 2026-08-28
- Date checked
- 2026-08-28
- Relevant section
- Standards terminology, category, certificate responsibility, restrictions, and specifications
- Supports
- Why a supplier standard or certificate has a defined scope and should not be replaced by a marketing grade.
- Does not establish
- An IFRA certificate for every use, an ingredient purity certificate, or a universal therapeutic or food grade.
- Recheck when
- IFRA standard, certificate, category, material, or product claim changes.
4. The NIST Chemistry WebBook
National Institute of Standards and Technology · webbook.nist.gov
- Published or revised
- NIST Standard Reference Database 69 hub checked 2026-08-28
- Date checked
- 2026-08-28
- Relevant section
- Chemical identity, reference data, spectra, and database scope
- Supports
- Why a chemical reference record can describe an identified substance or analytical comparison without creating a retail quality grade.
- Does not establish
- The identity, purity, botanical origin, safety, or efficacy of a reader’s bottle without a matched lot and method.
- Recheck when
- NIST data, material identity, analytical method, or proposed quality claim changes.
About this page
Prepared by Essence Authority Editorial Team.