Can you call your candle natural, non-toxic or clean burning?

Only with evidence, and "non-toxic" and broad "eco-friendly" claims are the hardest to support. The FTC's Green Guides say a non-toxic claim conveys that the product is non-toxic for people and for the environment, and that unqualified general environmental benefit claims should not be made at all. No federal definition of "natural" exists for candles. "Clean burning" has no agency definition, and no good peer-reviewed comparison of soy and paraffin emissions has been published. Health claims such as "relieves anxiety" or "helps you sleep" are drug claims to FDA, and "repels mosquitoes" makes a candle a pesticide. This page goes claim by claim, with the rule, the risk and wording you can defend.

The rules that govern candle claims

• Any claim must be true and supportable. The FTC's labeling rules forbid a statement of identity that is false or misleading in any respect, and bar naming an ingredient that is not present in a substantial or significantly effective amount [1].
• Environmental claims fall under the FTC's Guides for the Use of Environmental Marketing Claims, 16 CFR Part 260 (the Green Guides), which cover general environmental benefits, free-of claims, non-toxic claims, recyclable, renewable and other terms [2].
• "Made in USA" is a binding FTC rule, 16 CFR Part 323 [3].
• Health claims bring in FDA, which decides by intended use [4].
• Pest claims bring in EPA under FIFRA [5].
• Buyers add their own. Kohl's 100-Z requires every labeling claim to be valid, and burn time to meet the claim with no shortfall (-0 percent) [6]. That is one retailer's rule for the candles it buys.

Claim by claim

What the Green Guides say about non-toxic and eco-friendly

On non-toxic claims, the Green Guides say: "It is deceptive to misrepresent, directly or by implication, that a product, package, or service is non-toxic" [7]. They explain that such a claim likely conveys that the product is non-toxic both for humans and for the environment generally, and that marketers "should have competent and reliable scientific evidence" for that meaning or "should clearly and prominently qualify their claims to avoid deception" [7]. A burning candle releases combustion products, so a maker will rarely have that evidence for the candle as burned.

On general claims, the Guides say: "Unqualified general environmental benefit claims are difficult to interpret and likely convey a wide range of meanings." Because a marketer is unlikely to substantiate every reasonable interpretation, "marketers should not make unqualified general environmental benefit claims" [8]. Qualifying language should be clear and prominent and should limit the claim to a specific benefit, and "Marketers should not imply that any specific benefit is significant if it is, in fact, negligible" [8]. The Guides' examples include an "eco-friendly" brand name, which is deceptive on its own unless clearly qualified [8]. If you are naming a brand, see naming your candles and your brand.

Soy, paraffin and "clean burning"

Most "clean burning" claims are really claims that soy burns cleaner than paraffin. The evidence does not support saying so. The study most often cited, from South Carolina State University in 2009, was never published in a peer-reviewed journal, according to a candle supplier that looked into it [13], and no good peer-reviewed comparison of soy and paraffin emissions has been published. The largest peer-reviewed risk evaluation of scented candle emissions, Petry et al. (2014), concluded that "scented candles do not pose known health risks to the consumer" [9]; its authors were affiliated with ToxMinds, the Research Institute for Fragrance Materials, SC Johnson, Firmenich, Procter & Gamble and Reckitt Benckiser [10]. What the research says about candle smoke and indoor air sets out the evidence in full.

A wax sold as soy can still contain other things. U.S. Patent 6,797,020, a container soy wax patent, allows "no more than about 1.0 wt. % paraffin" in its claims [11]. Before printing "100% soy," get your wax supplier's composition statement in writing; soy wax explains what the label can and cannot mean.

Health and aromatherapy claims

FDA says that how aromatherapy products are regulated "depends mainly on how they are intended to be used," judged from factors "such as claims made in the labeling" [4]. It lists claims that a product will "relieve colic, ease pain, relax muscles, treat depression or anxiety," or "help you sleep" as drug claims [4]. FDA also says scented candles are among the fragrance products CPSC regulates [4], so a candle without health claims stays out of FDA's jurisdiction. Adding a drug claim is what brings it in.

Describing a scent ("lavender," "eucalyptus and mint") and a mood in general terms is common, but the closer the words get to a condition ("for anxiety," "sleep aid"), the closer they get to a drug claim. Candles applied to skin are a separate case; see massage candles.

Made in USA

The FTC's rule makes it unfair or deceptive to label a product Made in the United States unless three conditions all hold: final assembly or processing happens in the United States, all significant processing happens in the United States, and all or virtually all ingredients or components are made and sourced in the United States [3]. The rule reaches any unqualified U.S.-origin claim, whether the word is made, manufactured, built, produced, created or crafted, in the United States or in America [12].

For a candle, the components are the wax, wick, fragrance, dye and vessel. An imported jar or fragrance oil can make an unqualified "Made in USA" claim untrue. "Hand poured in the USA" with a qualification such as "from domestic and imported materials" describes what you did without claiming all the components.

Repellent claims

A candle that claims to repel or control pests is a pesticide unless it meets every condition of the minimum-risk exemption in 40 CFR 152.25(f), which include using only listed active ingredients (citronella and citronella oil are on the list), listing every active ingredient by name and percentage by weight and every inert ingredient, giving a street address, ZIP code and telephone number, and making no claims to control disease-carrying insects such as ticks that carry Lyme disease [5]. States may still require registration; see state rules and citronella and bug candles.

Claims online and in conversation

The same rules apply to your website, product listings, social posts and what you say at your booth. A claim you would not print on the label should not appear in a listing either. Selling candles online covers listings.

These are the claim rules as of October 2026. For a claim you are unsure of, read the FTC's guidance or ask a lawyer before you print it.

The evidence behind "clean burning"

If you want to say anything about how your candle affects indoor air, start with what the research actually shows. What the research says about candle smoke and indoor air is the place to begin.

References

1. 16 CFR 500.4, Statement of identity (Legal Information Institute, Cornell Law School), read October 22, 2026. https://www.law.cornell.edu/cfr/text/16/500.4
2. 16 CFR Part 260, Guides for the Use of Environmental Marketing Claims (table of sections) (Legal Information Institute, Cornell Law School), read October 22, 2026. https://www.law.cornell.edu/cfr/text/16/part-260
3. 16 CFR 323.2, Prohibited acts (Made in USA Labeling) (Legal Information Institute, Cornell Law School), read October 22, 2026. https://www.law.cornell.edu/cfr/text/16/323.2
4. U.S. Food and Drug Administration, Aromatherapy, content current as of September 8, 2023. https://www.fda.gov/cosmetics/products/aromatherapy
5. 40 CFR 152.25, Exemptions for pesticides of a character not requiring FIFRA regulation (Legal Information Institute, Cornell Law School), read October 22, 2026. https://www.law.cornell.edu/cfr/text/40/152.25
6. Kohl's, Private Brands Performance Claims Test Protocols 100, Protocol 100-Z: Candle (including freestanding, taper, tealight, votive, filled and novelty candles), revised February 2025 (candle limits unchanged from 100-Y, February 2023; adds a Hardlines Regulatory Supplement). https://link.kohls.com/content/dam/klink/100-Z-CANDLE.pdf
7. 16 CFR 260.10, Non-toxic claims (Legal Information Institute, Cornell Law School), read October 22, 2026. https://www.law.cornell.edu/cfr/text/16/260.10
8. 16 CFR 260.4, General environmental benefit claims (Legal Information Institute, Cornell Law School), read October 22, 2026. https://www.law.cornell.edu/cfr/text/16/260.4
9. Petry T, Vitale D, Joachim FJ, Smith B, Cruse L, Mascarenhas R, Schneider S, Singal M., Human health risk evaluation of selected VOC, SVOC and particulate emissions from scented candles, Regulatory Toxicology and Pharmacology 69(1):55-70, 2014. https://doi.org/10.1016/j.yrtph.2014.02.010
10. Pherobase, literature record for Petry et al. 2014 with abstract and author affiliations, read October 22, 2026. https://pherobase.com/literature/data/details/B/22611
11. U.S. Patent and Trademark Office, U.S. Patent 6,797,020, full text (claims and description), read October 22, 2026. https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6797020
12. 16 CFR 323.1, Definitions (Made in USA Labeling) (Legal Information Institute, Cornell Law School), read October 22, 2026. https://www.law.cornell.edu/cfr/text/16/323.1
13. Village Craft & Candle, Soy Wax vs Paraffin Wax, Erin Parsons, October 23, 2021. https://villagecraftandcandle.com/blogs/news/soy-wax-vs-paraffin-wax