The Best Non-Toxic Cast Iron Seasoning of 2026
29 of the 32 cast iron seasoning products PFAS Authority has graded score below its 70 point pass mark for PFAS and other toxins, 90.6% of the category, as of October 2026, leaving 3 that pass. The highest graded is Crisbee Stik Cast Iron Seasoning at 85 out of 100.
Every grade below is built from published materials, ingredient lists, certifications and brand disclosures, scored on one public rubric and ranked best-graded first. Each score links to the full breakdown of what earned it, and the numbers across the whole dataset are published too.
Is cast iron seasoning non-toxic?
3 of the 32 cast iron seasoning products we graded clear our screen and 29 do not. Non-toxic is not a defined or regulated term, so what we can tell you is what our graders recorded. Beyond PFAS, the hazards found or left unruled-out on cast iron seasoning products in this category are undisclosed fragrance, VOCs and off-gassing, pesticide residue. The highest graded here is Crisbee Stik Cast Iron Seasoning at 85 out of 100.
Quick picks
A second brand to consider
Lodge Cast Iron Seasoning SprayThe best grade here from a brand other than the winner
85 Excellent
Why Crisbee Stik Cast Iron Seasoning wins, and what it beats
Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 1 product it beats, so you can see exactly where the 10 points between the top and the bottom of this cast iron seasoning ranking come from.
The winner
Made of Organic waxes and oils blend.
- +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
- +10Category baseline. The starting point for this type of product, before anything specific to this product is counted.
- -10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.
15risk points in total, which is a grade of 85
What the grade does not fix. It still carries one risk factor, No PFAS disclosure, and our graders recorded 2 other hazards on it. See the full breakdown.
What it beats, and why
What puts it behind. The winner earns -10 points for Base material not linked to PFAS. We found nothing comparable published for this product.
Made of cast iron, bare or seasoned with the brand.
- +30Category baseline
- +15No PFAS disclosure
- -20Bare uncoated material. Recorded as a bare, uncoated material with no surface coating or treatment.
25risk points, a grade of 75
No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.
What to watch for in cast iron seasoning
Beyond the PFAS grade, these are the things our graders recorded on the 32 cast iron seasoning products in this category. We assess from materials, brand statements and published research. We do not lab-test.
- Undisclosed fragrance
A single word on a label that can stand for dozens of undeclared ingredients, protected as trade secret.
Found on 3 of these cast iron seasoning products. Plausible but unconfirmed on 11 more, meaning nobody has ruled it out. FDA
- VOCs and off-gassing
Volatile compounds that evaporate out of a material at room temperature, which is what a new product smell is.
Plausible but unconfirmed on 7 more, meaning nobody has ruled it out. EPA
- Pesticide residue
What remains on or in a crop after treatment, and in the textiles made from it.
Plausible but unconfirmed on 1 more, meaning nobody has ruled it out. EPA
The safest cast iron seasoning we graded, lowest PFAS risk first
- 1
Highest grade here
- Organic waxes and oils blend
- We found no PFAS statement from the brand
- Oil rancidity and off-gassing
2 hazards checked on this product, all on its full breakdown.
- 2
- mineral oil and soy-based oil blend
- Aerosol inhalation (mineral oil mist)
3 hazards checked on this product, all on its full breakdown.
- 3
No coating to fail
Cast Iron Ultimate Bundle
75ExcellentPFAS grade- cast iron, bare or seasoned with the brand
- We found no PFAS statement from the brand
- Iron leaching into food
2 hazards checked on this product, all on its full breakdown.
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- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
Every cast iron seasoning that passes, side by side
Sorted by score. A higher score means lower PFAS risk. Scored against 3 hazards that apply to this category.
| # | Cast Iron Seasoning | Score | Rating | Made of | Key concern |
|---|---|---|---|---|---|
| 1 | Crisbee Stik Cast Iron Seasoning | 85 | Excellent | Organic waxes and oils blend | Oil rancidity and off-gassing |
| 2 | Lodge Cast Iron Seasoning Spray | 85 | Excellent | mineral oil and soy-based oil blend | Aerosol inhalation (mineral oil mist) |
| 3 | Cast Iron Ultimate Bundle | 75 | Excellent | cast iron, bare or seasoned with the brand | Iron leaching into food |
The verdict on cast iron seasoning
Crisbee Stik Cast Iron Seasoning grades 85 out of 100, the highest here. It is organic waxes and oils blend. We found no PFAS statement from the brand, so the grade rests on materials alone.
Choose Lodge Cast Iron Seasoning Spray instead if you want a second option at 85 out of 100, mineral oil and soy-based oil blend.
We hold no price data, so nothing here is a budget recommendation. Grades are model-based assessments from published materials and disclosures, not laboratory tests.
The cast iron seasoning we would skip
Lowest scoring in this category, worst first, with the reason.
- 65Caron & Doucet Cast Iron OilGood
Thermal degradation and rancidity
- 65Foodieville Cast Iron OilGood
Oxidative rancidity and lipid peroxide formation
- 65BLACKSTONE Griddle Seasoning & Cast Iron ConditionerGood
Oil oxidation and rancidity over time
What we check on cast iron seasoning
- Heavy metals. Lead, cadmium, arsenic and others that accumulate in the body. FDA
- Lead. A heavy metal with no safe exposure level, especially for children. ATSDR
- Cadmium. A toxic heavy metal found in some glazes, pigments, and batteries. ATSDR
Full point-by-point rubric on the methodology page.
The cast iron seasoning brands we found no PFAS statement from
We found no PFAS statement from 11 of the brands here. That is our research, not proof a brand has never said anything, and it is not evidence of harm. It is why none of them score well on disclosure.
Blackstone, Camp Chef, Caron & Doucet, Clark's, Crisbee, Culina, Field Company, Foodieville, Grapeseed Oil, Lancaster Cast Iron, Walrus Oil.
The brands that have published something, and what each of them actually said, are in our record of what every brand has said about PFAS.
Common questions about PFAS in cast iron seasoning
Is cast iron seasoning PFAS free?
29 of the 32 cast iron seasoning products PFAS Authority has graded score below its 70 point pass mark for PFAS and other toxins, 90.6% of the category, as of October 2026, leaving 3 that pass. The highest graded is Crisbee Stik Cast Iron Seasoning at 85 out of 100. The lowest graded is Caron & Doucet Cast Iron Oil at 65 out of 100.
Is cast iron seasoning non-toxic?
3 of the 32 cast iron seasoning products we graded clear our screen and 29 do not. Non-toxic is not a defined or regulated term, so what we can tell you is what our graders recorded. Beyond PFAS, the hazards found or left unruled-out on cast iron seasoning products in this category are undisclosed fragrance, VOCs and off-gassing, pesticide residue. The highest graded here is Crisbee Stik Cast Iron Seasoning at 85 out of 100.
What is the safest cast iron seasoning to buy?
On our grades, Crisbee Stik Cast Iron Seasoning at 85 out of 100, which we band as Excellent. Then Lodge Cast Iron Seasoning Spray at 85. These are model-based assessments from published materials, ingredient lists, certifications and disclosures, not laboratory tests, so treat them as the lowest risk we can evidence rather than a safety guarantee.
Which cast iron seasoning grades best for PFAS?
Crisbee Stik Cast Iron Seasoning, at 85 out of 100, which we band as Excellent. It is organic waxes and oils blend. The runner up is Lodge Cast Iron Seasoning Spray at 85.
Which cast iron seasoning should I avoid?
The three lowest scoring we hold are Caron & Doucet Cast Iron Oil at 65, Foodieville Cast Iron Oil at 65, BLACKSTONE Griddle Seasoning & Cast Iron Conditioner at 65. The problem with the first is that the main material recorded for this product is not one associated with PFAS.
How can you tell if cast iron seasoning contains PFAS?
In this category we check for heavy metals, lead, cadmium. Lead, cadmium, arsenic and others that accumulate in the body. Language like stain resistant, water repellent or easy release usually means fluorinated chemistry even when PFAS is never printed on the box.
Which cast iron seasoning brands have not published a PFAS statement?
We found no PFAS statement from 11 of the brands we scored in this category, including Blackstone, Camp Chef, Caron & Doucet, Clark's, Crisbee, Culina. That is what our research turned up, not proof a brand has never said anything, and a missing statement is not evidence of harm. It is the reason those brands cannot score well on disclosure.
Do you lab test cast iron seasoning?
No. We score from published ingredient lists, materials, certifications, disclosures and third party lab results where they exist. Where a product has been independently tested we use that result and say so.
More kitchen and cooking categories we have graded
Same rubric, same scale. These are the categories closest to cast iron seasoning.
- Best non-toxic cookware290 graded
- Best non-toxic parchment paper243 graded
- Best non-toxic air fryers219 graded
- Best non-toxic bakeware162 graded
- Best non-toxic dish soap6 graded
- Best non-toxic microwave popcorn78 graded
- Best non-toxic non-stick kitchen gadgets69 graded
- Best non-toxic ceramic cookware18 graded
Get the graded list, free.
The products we score each week, and the best-graded alternative in every category.
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Does a particular brand of cast iron seasoning have PFAS?
We also wrote this up at length. PFAS in Cast Iron Seasoning, Where the Ingredient Is Always on the Label
Want to filter the whole category yourself? Browse all 32 cast iron seasoning.