What does "ceramic-coated claim" really mean for your family?
A marketing label applied to cookware, air fryers, and frying pans to suggest the cooking surface is made from ceramic material rather than PTFE (Teflon). The claim is unregulated -- "ceramic nonstick" has no legal definition in the United States, no required compositional test, and no government body verifies it before a brand prints it on a box. True ceramic sol-gel coatings are PFAS-free by chemistry. But some products marketed as ceramic are hybrid PTFE formulations with mineral branding added for marketing. Knowing the difference is how you separate genuinely safer cookware from an expensive rebrand.
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Scan any cookware aisle or air fryer listing and you will find the word "ceramic" doing enormous marketing work. Ceramic-coated pans, ceramic air fryer baskets, ceramic bakeware -- all of it pitched with language implying a natural, mineral surface that is safer than Teflon. Parents who have been reading about PFAS grab these products with relief. The "ceramic" label feels like an answer.
The problem is that "ceramic nonstick" is a marketing term, not a compositional standard. The US FDA has not defined it. The EPA has not defined it. No federal agency requires testing before a brand applies the word "ceramic" to a product. A manufacturer can call a coating ceramic because it contains trace mineral particles embedded in a base polymer -- including PTFE. Understanding exactly what "ceramic" does and does not guarantee is foundational to making a genuinely safer cookware choice.
The coatings that legitimately earn the ceramic label are sol-gel coatings -- a class of inorganic polymer systems derived from silicon dioxide (silica), which is essentially the same compound found in sand and glass. Sol-gel chemistry involves a solution of silicon-based precursors that forms a glassy, continuous surface layer when cured at high temperatures. The resulting material is hard, slippery, and chemically inert at cooking temperatures.
The most widely known commercial version is Thermolon, the coating system developed by GreenPan. GreenPan holds the original patents on Thermolon and markets it as the first PFAS-free nonstick coating. Thermolon is silica-based, contains no fluoropolymers by design, and is manufactured without PFOA, PTFE, PFAS, or lead. The chemistry of the coating is PFAS-free by structure -- there is no fluorine in the formulation to begin with.
Caraway and Our Place use ceramic sol-gel coatings in the same chemical family. Both brands have commissioned third-party testing to confirm the absence of PFAS compounds, and both publish those results publicly. This is the gold standard for ceramic claim transparency: chemistry that is PFAS-free by design, confirmed by independent laboratory analysis with published results accessible to consumers.
The nonstick properties of ceramic sol-gel coatings come from the microscopic smoothness of the cured silica surface rather than from fluoropolymer chemistry. This is why ceramic pans require lower heat and more oil than PTFE to maintain performance -- the mechanism of nonstick release is fundamentally different.
Here is where the marketing complexity begins. "Ceramic nonstick" has no legal definition in the United States, which means any manufacturer can use the word "ceramic" to describe a coating that contains mineral particles -- even if the base polymer is PTFE.
The most common version of this is coatings marketed as granite, diamond, stone, or marble nonstick. These names describe the visual texture or the particle additives rather than the chemical composition of the base polymer. A "granite" coating typically consists of PTFE or another fluoropolymer as the base layer, with crushed granite or stone-pattern pigment added for aesthetics and scratch resistance. A "diamond" coating uses PTFE or a similar base with diamond particles for hardness. A "titanium-reinforced" coating is usually PTFE with titanium dioxide or titanium particles for durability.
None of these are PFAS-free. The mineral marketing is accurate -- there are mineral particles present. But the functional nonstick layer is still fluoropolymer-based. Families who purchase these products expecting a ceramic alternative to PTFE are making a well-intentioned choice based on misleading framing.
Some brands have been more direct about the deception this enables. Consumer Reports has specifically documented cases where products marketed with mineral-themed coating names were tested and found to contain PTFE. The visual vocabulary of "stone," "granite," and "marble" cookware has been deliberately designed to appeal to consumers trying to move away from PTFE -- while remaining PTFE-based products.
Ceramic sol-gel coatings are genuinely PFAS-free, but they come with a performance trade-off that every buyer should understand before choosing them. PTFE coatings typically last three to five years with normal use. True ceramic sol-gel coatings typically last one to three years before degradation -- the nonstick release deteriorates faster under high heat, metal utensils, dishwasher cycling, and abrasive cleaning.
This is not a safety concern -- ceramic coatings do not release harmful compounds as they degrade the way overheated PTFE can release particulates. But it is a practical concern. Degraded ceramic coatings lose their nonstick properties and need replacement sooner.
Consumer Reports, in its independent testing of nonstick pans, found that ceramic-coated pans generally performed well out of the box but showed more significant performance decline over the medium term compared to PTFE pans. Their testing has consistently found that ceramic pans are best suited to low-to-medium heat cooking, and that high-heat use accelerates coating deterioration.
The durability gap has a counterintuitive implication: if a family buys a ceramic-coated pan expecting a long-lived PFAS-free solution, gets two years of life from it, and replaces it twice as often as a PTFE pan, the overall economic and environmental calculus changes. The safety case for ceramic over PTFE remains intact -- degraded ceramic is less concerning than degraded PTFE -- but buyers should go in with realistic expectations.
Because the claim is unregulated, verification requires active investigation. Here is the hierarchy of evidence to look for:
Explicit PTFE-free + PFAS-free language together. A brand claiming ceramic nonstick should be able to state explicitly that the coating contains no PTFE and no PFAS. If a product page says "ceramic-coated" without mentioning PTFE-free status, that is a prompt to investigate further. The coatings most worth scrutinizing are those using stone, granite, diamond, marble, or titanium branding -- these almost always indicate a PTFE base.
Named coating system. Genuine ceramic sol-gel coatings typically have a named proprietary system: Thermolon (GreenPan), or a branded equivalent. If a brand cannot name the coating or refuses to describe its chemistry, that is a signal that the "ceramic" descriptor may be more decorative than compositional.
Third-party lab testing with published results. Caraway is the current consumer benchmark: it publishes third-party test results for over 200 substances, accessible on the brand's website. Our Place also has third-party verification. GreenPan's Thermolon has historical Consumer Reports testing confirming no detectable PFAS -- though GreenPan stopped publicly publishing updated test data after 2020 and settled a 2019 class action over marketing practices, so the transparency record there is mixed.
California AB 1200 chemical disclosure compliance. California's AB 1200, effective January 2024, requires cookware manufacturers selling into California to disclose all intentionally added chemicals on their product websites. Brands in compliance with AB 1200 have a publicly accessible chemical disclosure page. Brands that have not published this disclosure are either not selling in California or are not compliant -- and non-compliance is a red flag for a product making ceramic or PFAS-free claims.
NSF 537 or equivalent total organic fluorine testing. NSF International's Certification Guideline 537, launched March 2025, defines PFAS-free as total organic fluorine below 50 parts per million. TOF analysis is the most sensitive screening method for detecting PFAS as a class -- it catches fluoropolymers that individual compound-by-compound testing might miss. Asking whether a brand has commissioned TOF testing is a sophisticated but now-relevant question.
Ceramic-coated claims in air fryers require the same scrutiny as in cookware, with one additional concern: the enclosed, fan-circulated design of an air fryer means that any particles released from a degrading or overheated coating are distributed throughout the cooking cavity rather than rising and dispersing in open air.
Most air fryer baskets and trays that market themselves as ceramic are using one of two coating types. Some -- like certain Our Place Wonder Oven configurations -- use genuine ceramic sol-gel coatings with verified PFAS-free status. Others use the PTFE-with-mineral-particles approach that applies the word "ceramic" to describe a texture or visual finish, not the coating chemistry.
For air fryers specifically, the most verifiably PFAS-free options are either stainless steel cooking surfaces (no coating needed, no verification required) or models from brands that have explicitly stated PFAS-free AND PTFE-free status for the food contact surface, backed by third-party testing. Brands that market their air fryer baskets as "non-stick ceramic" without addressing PTFE-free status should be evaluated with the same skepticism applied to cookware.
Air fryer temperatures typically range from 300 to 450 degrees Fahrenheit. PTFE begins to degrade at temperatures above 500 degrees and releases potentially harmful particulates at 570 degrees and above. Standard air frying stays below those thresholds in most use cases. But the enclosed cavity and forced air circulation remain relevant factors when comparing coating safety across appliances -- the PFAS-free question is not less important in an air fryer than in a skillet.
A practical side-by-side to anchor the distinction:
Brands with verified true ceramic (sol-gel, PFAS-free by chemistry):
Products using mineral-branded PTFE (not PFAS-free):
The core issue is regulatory: the US has no federal standard defining what qualifies as "ceramic" for cookware coating purposes, just as it has no defined standard for PFAS-free claims. This vacuum has been commercially exploited by manufacturers who recognized that parents worried about PTFE and PFAS were a motivated buyer segment.
California AB 1200 provides the most significant current constraint. It requires brands to disclose intentionally added chemicals and prohibits claiming freedom from a chemical class if the product contains other members of that class. A brand cannot call a product PFOA-free or ceramic while using other PTFE variants under this law. But AB 1200 applies only to products sold in California, and its chemical class interpretation has not yet been tested comprehensively in enforcement actions.
At the federal level, the FTC's Green Guides govern unsubstantiated environmental and material claims and provide a deceptive advertising basis for challenging misleading coating descriptions -- but there has been no specific FTC action targeting ceramic coating mislabeling to date.
Minnesota's Amara's Law, effective January 2025, bans the sale of nonstick cookware with intentionally added PFAS -- which means PTFE-based cookware, including mineral-branded PTFE products, cannot be sold in Minnesota. This effectively resolves the confusion by removing the offending category from the market in that state, but it does not reach the national level or create a positive "ceramic" standard.
Until a federal definition exists -- or until NSF 537 or an equivalent standard is applied to consumer product claims -- the burden of verification remains on the buyer.
For families trying to reduce PFAS exposure through cookware choices, the ceramic claim is not a dead end -- it is just a claim that requires verification. Here is a practical decision structure:
First choice: material-based PFAS-free options. Stainless steel, cast iron, carbon steel, and enameled cast iron contain no fluoropolymers and require no coating verification. These are PFAS-free by material composition. The trade-off is that they require different cooking techniques and more maintenance than nonstick options.
Second choice: verified ceramic sol-gel from transparent brands. Caraway is the current gold standard for consumer-facing transparency. Our Place is a close second. GreenPan's Thermolon chemistry is sound but consumer transparency has declined. For these brands, look for explicit PTFE-free + PFAS-free language, named coating system, and published third-party test data.
Skip: "Granite," "diamond," "marble," or "stone" nonstick products without a documented PTFE-free statement. These are almost universally PTFE-based products with mineral branding.
For [air fryers](/category/air-fryer): Stainless steel basket models are the most verifiable PFAS-free option. Among ceramic-marketed air fryers, apply the same verification criteria as for cookware -- explicit PTFE-free + PFAS-free, named coating chemistry, and ideally third-party test documentation.
The ceramic-coated claim can be real and meaningful. GreenPan's Thermolon patent changed the cookware category in a substantive way. Caraway has built a genuinely more transparent consumer relationship around that chemistry. But the term has been borrowed by an entire tier of products that do not share the underlying chemistry. Knowing which you are looking at requires looking past the label.
Most air fryers marketed as ceramic use mineral-pattern PTFE coatings rather than genuine sol-gel. Verify PTFE-free status explicitly before buying -- the enclosed fan-circulated cooking cavity makes coating chemistry more relevant than in open pans. Stainless steel basket models are the most verifiable PFAS-free choice; among ceramic-claimed models, Our Place's Wonder Oven has documented third-party verification.
The health relevance of the ceramic-coated claim depends entirely on whether the coating is a genuine ceramic sol-gel or a PTFE-based product with mineral branding. True ceramic sol-gel coatings -- like Thermolon and its equivalents -- are PFAS-free by chemistry. They do not contain fluoropolymers and do not release the compounds associated with PTFE degradation: fluoropolymer particulates, polymer fume fever, or PFAS-associated bioaccumulation.
When a product marketed as ceramic is actually PTFE-based with mineral additives, the health picture is the same as any PTFE-coated product. The PFAS exposure profile does not change because the product is called granite or stone or diamond. Families who bought these products believing they had made a PFAS-free choice have not reduced their exposure -- they have paid a premium for a marketing label.
The health stakes are highest for: - Families using ceramic-labeled air fryers, where the enclosed cooking environment increases the relevance of coating chemistry - Pregnant women and households with young children, for whom PFAS exposures during developmental windows carry the most documented risk - Anyone who bought a mineral-branded PTFE product under the assumption it was ceramic and has been using it at high heat
Degraded ceramic sol-gel is a performance concern, not a health emergency. The silica-based coating chips and loses nonstick properties, but the degraded particles are not associated with the health risks of PTFE degradation at high temperatures.
Federal (US): No federal definition exists for "ceramic" as applied to cookware coatings. The FDA, EPA, and FTC have not established a legal composition standard, testing requirement, or minimum specification for the ceramic claim on cookware or kitchen appliances. The FTC's Green Guides provide a general deceptive advertising framework applicable to unsubstantiated material claims but have not been applied in enforcement actions specifically targeting ceramic coating mislabeling.
California AB 1200 (effective January 2024): Requires cookware manufacturers selling into California to disclose all intentionally added chemicals on product websites and labels. Prohibits claiming a product is free of a specific chemical if it contains other members of the same hazardous chemical class. This prevents PTFE-based products from making PFAS-free or fluoropolymer-free claims, which applies indirectly to misleading ceramic claims on PTFE-based products.
Minnesota Amara's Law (effective January 1, 2025): Bans the sale of nonstick cookware with intentionally added PFAS, including air fryers with PFAS-coated food contact surfaces. PTFE-based cookware -- including mineral-branded PTFE products using ceramic-adjacent language -- cannot be sold in Minnesota. This resolves the practical confusion in that state by removing the offending product category.
NSF 537 (launched March 25, 2025): While not specific to ceramic claims, NSF 537 provides the most rigorous third-party framework for verifying PFAS-free status -- including the total organic fluorine threshold of 50 ppm that would distinguish genuine ceramic sol-gel from PTFE-based alternatives. Brands that certify to NSF 537 or commission equivalent TOF testing can substantiate PFAS-free claims with analytical evidence.
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Timeline
2007
GreenPan Launches Thermolon
GreenPan introduces Thermolon, the first commercially scaled ceramic sol-gel nonstick coating for consumer cookware. The silica-based coating contains no PTFE, PFOA, or fluoropolymers, establishing the technical foundation for the ceramic nonstick category.
2015
PFOA Phase-Out Opens Ceramic Marketing Window
Eight major US manufacturers complete the EPA's PFOA Stewardship Program. Consumer awareness of PFAS in cookware rises sharply, and brands begin marketing PTFE-based coatings with ceramic and mineral-themed names (granite, diamond, stone) to capture safety-conscious buyers.
2019
GreenPan Class Action Settlement
GreenPan settles a class action lawsuit over marketing practices related to its ceramic coating claims. The settlement does not challenge the chemistry of Thermolon but reflects the litigation environment forming around nonstick coating marketing.
January 2024
California AB 1200 Takes Effect
California requires cookware manufacturers to disclose intentionally added chemicals and prohibits class-level chemical mislabeling. PTFE-based cookware marketed with ceramic or PFAS-free language faces legal exposure for the first time in a major US market.
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It depends entirely on which product you are looking at. True ceramic sol-gel coatings -- the technology commercialized by GreenPan as Thermolon and used by brands like Caraway and Our Place -- are PFAS-free by chemical structure. They are silica-based and contain no fluoropolymers. Consumer Reports tested ceramic-coated pans and found no detectable PFAS across 96 compounds screened. However, many products marketed as ceramic nonstick are PTFE-based coatings with mineral particles (granite, diamond, stone) added for texture or branding. These are not PFAS-free. The only way to confirm which you are buying is to look for an explicit PTFE-free statement alongside the ceramic claim, and ideally third-party test documentation.
In the consumer market, true ceramic nonstick refers to sol-gel coatings derived from silicon dioxide -- a silica-based, fluoropolymer-free surface. Granite, stone, marble, and diamond nonstick coatings almost always describe PTFE-based coatings with mineral particles added for scratch resistance and visual appeal. The mineral names describe the additive, not the base polymer. A granite nonstick pan typically has a PTFE or similar fluoropolymer as its functional nonstick layer, with crushed granite particles for texture. These are not PFAS-free alternatives to Teflon -- they are Teflon equivalents with a ceramic-adjacent visual identity.
True ceramic sol-gel coatings typically last one to three years under normal use before the nonstick properties degrade noticeably. PTFE coatings typically last three to five years. Consumer Reports found that ceramic-coated pans generally performed well initially but showed more significant performance decline over the medium term. Ceramic is most durable at low-to-medium heat with wooden or silicone utensils and hand washing. High heat, metal utensils, dishwasher cycling, and abrasive cleaning accelerate degradation. The good news: degraded ceramic is a performance concern, not a health concern -- the silica-based coating does not release harmful compounds as it wears, unlike overheated PTFE.
Yes, by chemistry. Thermolon is a silica-based sol-gel coating that contains no PTFE, PFOA, or other fluoropolymers. GreenPan holds the original commercial patents on this coating type and was the first brand to commercialize PTFE-free nonstick for consumer cookware. Consumer Reports testing of GreenPan ceramic pans found no detectable PFAS among the compounds screened. The caveat: GreenPan settled a 2019 class action over marketing practices and no longer proactively publishes updated third-party test data as of 2020. The coating chemistry remains sound, but the company's consumer transparency record is less strong than Caraway's current published testing approach.
Ceramic air fryer baskets from brands that have verified their coatings as PTFE-free and PFAS-free -- with named sol-gel chemistry and third-party testing -- are among the safer nonstick options for air frying. Our Place's Wonder Oven is a documented example. However, many air fryers marketed as ceramic use mineral-branded PTFE coatings -- granite-pattern or stone-texture baskets that are PTFE-based. The enclosed, fan-circulated environment of an air fryer makes coating verification more important than in open pans, because any particles released from degrading coatings are distributed throughout the cooking cavity. Stainless steel basket models remain the most verifiably PFAS-free air fryer option.
Three brands stand out for documented ceramic sol-gel coatings with PFAS-free verification. Caraway publishes third-party test results for over 200 substances on its website and is California AB 1200 compliant -- it is the current consumer benchmark for transparency. Our Place uses a ceramic sol-gel coating with third-party testing and markets both cookware and air fryer products (the Wonder Oven). GreenPan's Thermolon is PFAS-free by chemistry and has historical Consumer Reports verification, though the company's recent transparency is more limited. Beyond these, independent verification from any brand requires checking for an explicit PTFE-free statement alongside the ceramic claim and published third-party testing.
California AB 1200, effective January 2024, does not specifically define or regulate what qualifies as a ceramic coating. However, it does require cookware manufacturers to disclose all intentionally added chemicals on product websites and labels, and it prohibits claiming a product is free of a specific chemical if the product contains other chemicals in the same hazardous class. In practice, this means a PTFE-based product marketed as ceramic cannot claim PFOA-free status while containing other PFAS -- the class-level restriction applies. AB 1200 also requires that brands selling into California publish accessible chemical disclosure pages, which gives consumers a mechanism to verify coating chemistry for compliant brands.
Four steps in order of reliability. First, look for explicit PTFE-free AND PFAS-free language together -- both terms should appear, not just the ceramic descriptor. Second, check whether the brand names the coating system (Thermolon or an equivalent branded sol-gel). Third, look for third-party test results published on the brand website -- Caraway sets the current standard for this. Fourth, check for California AB 1200 compliance: brands selling into California after January 2024 must publish chemical disclosures; the presence of a disclosure page and the absence of fluoropolymers in that disclosure is strong confirmation. For air fryers specifically, stainless steel basket models require no coating verification and are PFAS-free by material.
January 1, 2025
Minnesota Bans PFAS Cookware
Minnesota's Amara's Law bans the sale of nonstick cookware with intentionally added PFAS, including air fryers with PFAS-coated food contact surfaces. Mineral-branded PTFE products cannot be sold in Minnesota regardless of their ceramic marketing language.
March 25, 2025
NSF 537 Launches
NSF International releases the first standardized PFAS-free certification for food equipment materials, requiring total organic fluorine below 50 ppm. The standard provides an analytical foundation for distinguishing genuine ceramic sol-gel from mineral-branded PTFE in the absence of federal ceramic coating definitions.