Hemp Oil · Cast Iron Cookware Seasoning & Oil
Carrington Farms Hemp Oil
Lower concern; unrefined plant oil has no known PFAS risk.
Liquid hemp seed oil has no nonstick or water-resistant coatings and plant-based oils don't use PFAS in production. This cooking oil poses minimal PFAS risk.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Hemp seed oil, liquid cooking oil
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
PFAS exposure happens more often with clothing products.
Oxidation and rancidity from polyunsaturated fat content
Hemp seed oil is rich in linoleic and alpha-linolenic acids (polyunsaturated fats), which oxidize over time when exposed to light, heat, or air, forming potentially irritating peroxides and aldehydes. This is a shelf-stability issue rather than a manufacturing defect, and risk is managed by proper storage.
What’s reassuring
Safe base material
Made from ceramic, mineral, or natural fiber with no PFAS risk.
Pesticide residue
No specific recalls or test results documenting pesticide contamination in Carrington Farms Hemp Oil are publicly recorded. Standard commodity hemp oil supply chains do carry general agricultural residue risk, but this product lacks established evidence of violation.
Source: EPA ↗Microbial contamination risk in unrefined oils
Cold-pressed plant oils have lower microbial risk than water-based products; no foodborne illness outbreaks linked to this specific product are documented. Hemp seed oil is not a high-moisture medium that supports bacterial growth.
Heavy metals
Hemp is a known hyperaccumulator of soil cadmium and lead; however, these metals concentrate in the plant fiber and roots, not the seed oil itself. No published analysis of Carrington Farms Hemp Oil for heavy metals is available, but the risk to the oil product is theoretical rather than established.
Source: FDA ↗Allergenicity and cross-contamination
Hemp seed oil is not a major allergen and does not contain gluten or common tree nut proteins. Product packaging does not indicate shared equipment with tree nuts or sesame, but formal allergen statement verification is not publicly detailed.
The full breakdown
What it's made of and why it matters
Carrington Farms Hemp Oil is cold-pressed hemp seed oil, a liquid fat extracted from Cannabis sativa seeds. Unlike cookware coatings or ceramic vessels, this is a food product itself, not a container or cooking surface, so traditional cookware hazards (lead glazes, Teflon-type coating fume release, ceramic degradation) do not apply. Hemp seed oil is chemically a triglyceride blend dominated by polyunsaturated fatty acids, making it chemically inert in the bottle and during normal cooking use.
The brand's record and disclosure
Carrington Farms is a long-established hemp and plant-oil producer with consistent market presence; the brand does not publicly claim third-party testing for the product reviewed here, nor does it make explicit safety certifications beyond basic labeling compliance. No significant safety recalls or controversies have been established for this product in public records. The company's disclosure stance on food safety testing is minimal but not unusual for commodity cooking oils.
How it compares in its category
Hemp seed oil is a specialty cooking oil with a lower smoke point (about 330F/165C) than refined olive oil or avocado oil, making it less suitable for high-heat frying but appropriate for dressings, low-heat sauteing, and drizzling. Unlike mass-market seed oils from refined soybean or canola sources, hemp oil undergoes minimal industrial processing, which reduces the likelihood of residual solvent or processing-chemical contamination. It occupies a middle ground between commodity oils and premium cold-pressed options in terms of both price and processing transparency.
If you buy it
Store in a cool, dark place or refrigerator after opening, as the high polyunsaturated fat content oxidizes faster than saturated oils and can develop off-flavors or rancidity within weeks of opening. Use primarily for salad dressings, drizzling, or gentle heating below 350F; do not use for deep frying or prolonged high-heat cooking, as oxidized polyunsaturated fats may produce oxidation byproducts. Discard if the oil develops a musty or off smell, indicating rancidity. A typical bottle lasts 1-2 months with normal kitchen use once opened.
What we don’t know
- Basis
- Model estimate, 82% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Hemp Oil has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Cast Iron Cookware Seasoning & Oil
Coconut Oil
Cast Iron Ultimate Bundle
cast iron, bare or seasoned with coconut oil
Iron leaching into food
Limited concern
Rust and surface degradation
Limited concern
Lower concern; bare cast iron is inherently PFAS-free.
⚠Risky category by default
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How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.