Hemp oil is legal in the United States at the federal level, but the answer depends on what type of hemp oil you’re talking about. Oil pressed from hemp seeds is legal virtually everywhere and sold as a common food product. Oil extracted from hemp flowers or leaves that contains CBD occupies a more complicated legal space, with rules that vary by country and even by state.
Two Products, Two Legal Categories
The term “hemp oil” gets used for two very different products, and the legal distinction between them matters. Hemp seed oil is cold-pressed from the seeds of the cannabis plant. Because cannabis produces its active compounds in its flowers (buds), the seeds contain essentially zero cannabinoids. Hemp seed oil is sold alongside olive oil and flaxseed oil in grocery stores. It’s a food ingredient, not a controlled substance.
The other product is CBD oil, sometimes marketed as “hemp oil” or “hemp extract.” This is extracted from the flowers and leaves of hemp plants and contains significant levels of cannabidiol (CBD) along with trace amounts of THC. This type of oil falls under a completely different set of regulations.
Federal Law in the United States
The 2018 Farm Bill defines hemp as any part of the cannabis plant containing no more than 0.3% delta-9 THC on a dry-weight basis. Anything above that threshold is classified as marijuana and remains federally illegal. Hemp-derived products that stay at or below 0.3% THC are legal to produce, sell, and possess under federal law.
For hemp seed oil specifically, the FDA has gone a step further. The agency reviewed hemp seed oil, hulled hemp seeds, and hemp seed protein powder and confirmed all three as Generally Recognized as Safe (GRAS) for use in human food. That means hemp seed oil can be added to food products and sold without special authorization.
CBD oil derived from hemp is federally legal in terms of the Farm Bill, but the FDA has not approved CBD as a food additive or dietary supplement. This creates a gray area: it’s legal to grow and extract, but marketing it in food or making health claims about it can trigger enforcement actions. The FDA and FTC have issued warning letters to companies claiming their CBD products treat conditions like autism, ADHD, cancer, diabetes, depression, and Parkinson’s disease. Making medical claims about any hemp oil product without FDA approval is illegal.
State Laws Add Complexity
Even though hemp-derived CBD is federally legal, some states restrict the possession or sale of CBD products. The rules vary widely. Some states allow CBD only from in-state licensed producers. Others ban CBD in food and beverages. A few have placed restrictions on the forms CBD can take, such as prohibiting smokable hemp flower while allowing oils. If you’re buying CBD hemp oil, checking your state’s current regulations is worth the effort, because federal legality alone doesn’t guarantee you can purchase or possess it where you live.
Hemp seed oil, by contrast, faces no state-level restrictions. It’s treated the same as any other food-grade cooking oil.
Legal Status in the UK and EU
In the United Kingdom, hemp seed oil is sold freely as a food product. The UK Food Standards Agency has confirmed that hemp seeds, hemp seed oil, and ground hemp seeds have a history of consumption predating 1997, which means they don’t require novel food authorization.
CBD is a different story. The UK classified CBD extracts as novel foods in January 2019, meaning any CBD product requires formal authorization before it can legally be sold. As of now, no CBD extracts or isolates have been fully authorized for the UK market. Products that were already being sold before the cutoff date in February 2020 can remain on shelves only if they’re on an approved public list and their manufacturers have submitted validated applications. In Northern Ireland, the rules follow the EU framework, and the European Commission has not yet authorized any CBD food products either.
The EU sets specific THC limits for hemp food products. Hemp seed oil can contain a maximum of 7.5 mg/kg of THC equivalents. Whole hemp seeds and ground hemp seeds are capped at 3.0 mg/kg. These limits are designed to account for trace contamination that can occur during harvesting and processing, not because the seeds themselves produce THC.
Importing Hemp Oil Into the US
U.S. Customs and Border Protection allows the import of hemp products that don’t introduce THC into the human body. Products containing THC above federal limits are illegal to import. In practice, this means hemp seed oil clears customs without issue, while importing CBD oil requires documentation showing the product meets the 0.3% THC threshold. The USDA has required that imported hemp be tested by a DEA-registered laboratory, though enforcement of this specific requirement was delayed through the end of 2024.
Drug Testing and Hemp Seed Oil
One practical concern people have is whether consuming hemp oil could trigger a positive drug test. For hemp seed oil, the risk is extremely low. A clinical study gave 15 adults daily doses of THC ranging from 0.09 to 0.6 mg over successive 10-day periods, representing the levels found in commercially available hemp seed products. None of the participants tested positive at the standard 50 ng/mL screening cutoff used in workplace drug testing, except for a single specimen at the highest dose. Even then, the confirmation test (which uses a stricter 15 ng/mL threshold) came back well below the cutoff, at just 5.2 ng/mL.
To put that in perspective, you’d need to consume roughly 125 mL of hemp seed oil per day, about half a cup, to even approach the dose that produced that single borderline result. Normal dietary use of hemp seed oil in salad dressings or smoothies falls far below that level. CBD oils with higher trace THC content carry more risk, particularly if you use them daily in large amounts.
What You Can and Can’t See on Labels
Because the FDA treats hemp seed oil as a safe food ingredient, it can appear on nutrition labels and ingredient lists without restriction. CBD products face tighter scrutiny. Companies cannot legally claim their hemp oil treats, cures, or prevents any disease. The types of claims that have drawn enforcement actions include pain relief, anti-inflammatory effects, cancer prevention, blood sugar reduction, and treatment of neurological or psychiatric conditions. Even quoting customer reviews that describe medical benefits has been cited in warning letters.
If a hemp oil product makes specific health claims on its label or website, that’s a red flag for both its legal compliance and its reliability as a product. Legitimate hemp seed oil is marketed as a food. Legitimate CBD products describe what’s in the bottle without promising what it will do to your body.