PFAS in Cast Iron Seasoning, Where the Ingredient Is Always on the Label

We graded 32 cast iron seasoning products. 31 of them grade 65 out of 100, and the one above them, at 75, is a bundle that includes the pan. Nothing here lands in our Poor or Bad bands, and nothing is described as a proprietary coating.

That is unusual. In most categories on this site the grades spread out because some manufacturers will not name a coating. Cast iron seasoning is an edible or food-grade oil, wax or fat, sold with the ingredient on the label, so there is no hidden coating to find.

Summary comparison table

Product	PFAS grade	Seasoning agent as recorded
Cast Iron Ultimate Bundle	Excellent, 75/100	Cast iron, bare or seasoned with coconut oil
Crisbee Puck Cast Iron Seasoning	Good, 65/100	Soybean oil and beeswax blend
Crisbee Stik Cast Iron Seasoning	Good, 65/100	Coconut oil
Lodge Cast Iron Seasoning Spray	Good, 65/100	Canola oil spray, no added coatings
Lodge Canola Oil Seasoning Spray	Good, 65/100	Canola oil
Field Company Cast Iron Seasoning Oil	Good, 65/100	Hemp oil
Verdana Organic Cast Iron Seasoning Oil	Good, 65/100	Organic food-grade coconut oil
Clark's Cast Iron Seasoning Oil	Good, 65/100	Vegetable oil, no coating applied
Walrus Oil Cast Iron Oil	Good, 65/100	Food-grade mineral oil
Cast Iron Chris Seasoning and Maintenance Compound	Good, 65/100	Mineral oil and natural wax blend
Caron & Doucet Cast Iron Oil	Good, 65/100	Almond oil, no coating
Blackstone Griddle Seasoning and Cast Iron Conditioner	Good, 65/100	Canola and mineral oil base

How we graded these

Every grade here is a model-based estimate built from publicly available product information and manufacturer disclosures, not a lab test performed by our team. A high score means lower concern based on reviewed sources, never PFAS-free and never safe. No product in this category carries published independent lab data, a PFAS-free claim or third-party verification. Look up any specific product in our PFAS product finder.

Why 31 of 32 grade exactly the same

Every seasoning product here is scored on the same three things. It starts from the cast iron category baseline, it earns a credit because its main material, an oil, a wax or a fat, is not associated with PFAS, and it carries a fifteen point penalty because its maker says nothing about PFAS. That adds up to 65, whether the tin holds soybean oil, coconut oil, hemp oil, almond oil, mineral oil, beeswax or bacon grease.

The one product above them, the Cast Iron Ultimate Bundle at 75, is recorded as cast iron that is bare or seasoned with coconut oil. It earns the larger credit our model gives a bare, uncoated pan, which is a difference in what is in the box rather than in the oil.

So if you are choosing between seasoning oils, our grade will not choose for you. Pick on smoke point, finish and price.

A correction to this guide

An earlier version of this guide said the seasoning products split between 80 and 65 because some makers addressed PFAS and others did not. That was wrong. None of these makers addresses PFAS. The products at 80 were records that had skipped the silence penalty every other silent brand carries, and two Toups seasoning compounds had been credited as if they were bare metal. On 16 September 2026 we corrected both across the site, and every seasoning product in this category now grades 65.

Where the actual question about cast iron lives

If you came here worried about PFAS and cast iron, the seasoning is not where the question belongs. A bare cast iron pan seasoned with oil has no synthetic coating on it at all, which is most of its appeal. Our cast iron skillets guide covers the pans themselves.

Three kinds of product used to be filed in this category and no longer are, plain bottles of cooking oil sold for the kitchen rather than for cast iron, a griddle appliance, and a no-stick cooking spray. A no-stick cooking spray is the opposite of seasoning a pan, and none of them told you anything about seasoning products.

What to avoid

• Reaching for a no-stick cooking spray instead of a seasoning oil. It is a different product doing a different job.
• Paying more for organic or premium branding on the strength of our grade. The organic Verdana oil grades 65, the same as a plain vegetable oil.
• Reading 65 as a warning. It reflects a maker saying nothing about PFAS on a product whose ingredient is a named oil or wax, not a concern about the oil.

Our pick

Based on available materials and data, any seasoning product here is a reasonable choice, because 31 of 32 grade the same 65 out of 100 on the same three factors. For a solid bar that is easy to apply, the Crisbee Puck is recorded as soybean oil and beeswax. For a spray, the Lodge Cast Iron Seasoning Spray is recorded as canola oil with no added coatings. These grades are estimates built from disclosed ingredients, not laboratory proof, and nothing here is being called PFAS-free or safe by us.

FAQ

Does cast iron seasoning contain PFAS?

Every product in this category is recorded as a named oil, wax or fat, and none is described as a synthetic or proprietary coating. That is why the grades sit at 65 and 75 rather than the 15 to 40 we see in coated-product categories. None of the makers publishes a PFAS statement and we have not lab tested any of them, so this reflects what is disclosed about ingredients.

What oil is best for seasoning cast iron?

Our grading does not rank oils by cooking performance. Soybean, canola, vegetable, coconut, hemp, almond, grapeseed and peanut oils all grade 65 here, so pick on smoke point and cost rather than on our grade.

Why do all these seasoning oils grade 65?

Because each carries the same three factors, the category baseline, a credit for a material not associated with PFAS, and a fifteen point penalty because the maker says nothing about PFAS. The oil type and the bottle, bar or spray format make no difference to the grade.

Is a cast iron seasoning spray worse than an oil?

Not in our data. Lodge's two seasoning sprays grade 65, the same as Verdana's organic bottled oil and Crisbee's solid bar. Format is not something our model scores here.