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.
What True Ceramic Coatings Actually Are
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.
Why "Ceramic" Is Not Always What It Seems
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.
The Durability Reality: Ceramic vs. PTFE
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.
How to Verify Whether a Ceramic Claim Is Real
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.
The Air Fryer Dimension
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.
Verified Ceramic Brands vs. Mineral-Branded PTFE
A practical side-by-side to anchor the distinction:
Brands with verified true ceramic (sol-gel, PFAS-free by chemistry):
- GreenPan (Thermolon coating): The originator of commercial PTFE-free ceramic sol-gel for cookware. Thermolon is silica-based, no fluoropolymers. Consumer Reports testing found no detectable PFAS in multiple GreenPan product tests. Caveat: GreenPan settled a 2019 class action over marketing and no longer proactively publishes updated third-party test data -- the chemistry is sound but the transparency record has gaps.
- Caraway: Ceramic sol-gel coating, explicit PFAS-free and PTFE-free status, third-party testing for 200+ substances with published results, California AB 1200 compliant. Currently the most transparently documented ceramic cookware brand in the consumer market.
- Our Place (Always Pan, Wonder Oven): Ceramic sol-gel coating, explicit PFAS-free and PTFE-free, third-party testing. The Wonder Oven is verified as a ceramic-coated air fryer alternative to PTFE-basket models.
Products using mineral-branded PTFE (not PFAS-free):
- Any cookware or air fryer marketed as "granite nonstick," "diamond nonstick," "stone coat," "marble ceramic," or "titanium-reinforced ceramic" without an explicit PTFE-free statement is almost certainly PTFE-based with mineral additives. The visual and marketing vocabulary borrows from ceramics but the chemistry does not.
- Brands that list "ceramic" in a coating description alongside "duralon," "quantanium," or similar trademarked PTFE-variant names are disclosing a hybrid: the PTFE is present, the ceramic descriptor refers to an additive layer.
- Inexpensive import cookware using phrases like "healthier ceramic coating" or "eco-friendly stone" without disclosing the base polymer should be treated as PTFE until proven otherwise.
The Regulatory Gap That Enables the Confusion
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.
What a Safer Cookware Strategy Actually Looks Like
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.