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Lipids & Fatty Acids

Hemp Seed Oil

Also known as: Cannabis sativa seed oil, Hemp oil, Hempseed oil

Cannabis's non-psychoactive cousin — a perfectly balanced 3:1 omega-6-to-3 oil for skin and salad alike.

  • By IngredientWiki Editorial Team
  • Fact-checked by IngredientWiki Editorial Team
  • Updated 2026-09-26
  • 2 min read

In short

Hemp seed oil is cold-pressed from the seeds of Cannabis sativa and contains essentially no THC or CBD — it is a culinary and cosmetic oil, not a cannabis product. Its claim to fame is fatty-acid balance: a roughly 3:1 omega-6-to-omega-3 ratio, unusually close to the ratio considered optimal for human nutrition, plus gamma-linolenic acid (GLA) for anti-inflammatory support. In skincare it is a light, fast-absorbing emollient that suits acne-prone and dry skin, with linoleic acid supporting barrier repair. Dietarily it is best used raw (low smoke point), and its omega profile makes it a genuinely useful addition to modern diets heavy in omega-6.

  • Seed oil of Cannabis sativa — no THC or CBD content
  • ~3:1 omega-6:omega-3 ratio, plus GLA
  • Light non-comedogenic emollient for skin
  • Low smoke point: use raw in dressings

What is Hemp Seed Oil?

Hemp seed oil suffers from an identity problem — it shares a name with the cannabis plant but contains none of the compounds that make that plant psychoactive or therapeutic in the CBD sense. What it does contain is one of the most balanced fatty-acid profiles in the oil world: a near-ideal omega-6-to-3 ratio plus a bonus of GLA, packaged in a light green oil that skin drinks quickly and salads genuinely benefit from. It is cannabis's innocent, nutritional cousin — and worth knowing on its own terms.

Where it comes from

Natural sources

  • Cold-pressed seeds of Cannabis sativa (industrial hemp)
  • Contains 0% THC and negligible-to-zero CBD — legally a food oil
  • Profile: ~55% linoleic, ~20% alpha-linolenic (omega-3), ~10% oleic, 2–4% GLA

How it's made

Food-grade oil (raw use) and cosmetic-grade oil for skincare.

What it does in products

  • Omega-3 and omega-6 supply with GLA
  • Skin barrier fatty-acid replenishment
  • Light emolliency without occlusion
  • Dietary anti-inflammatory fatty-acid balance

Benefits

Skin moisturization and barrier support

moderate evidence

Linoleic acid supports ceramide synthesis; trials and cosmetic use document hydration benefits, particularly for dry and acne-prone skin.

Dietary omega balance

moderate evidence

Its 3:1 omega-6:3 ratio is among the best of common oils; small trials suggest improvements in skin dryness and fatty-acid status markers with dietary use.

GLA supply

moderate evidence

Contains meaningful gamma-linolenic acid — the same anti-inflammatory omega-6 family marketed in evening primrose and borage oils.

Side effects & safety

Mild digestive upset at high dietary doses (uncommon)Typical of oils in excess.
Breakouts in very acne-prone skin (rare)Generally rated low-comedogenic; individual variation exists.

Safety considerations

  • Safe as food and topically.
  • Anticoagulants — high dietary omega-3 intake may mildly affect platelets; routine amounts rarely relevant.
  • Not for: None

How it's used

In supplements

1–2 tablespoons daily as a food oil (raw); not typically encapsulated.

In skincare

1–10% in emulsions or used neat as a light facial oil.

Regulatory status

  • GRAS food oil; permitted cosmetic ingredient. Distinct from CBD products, which are regulated separately.
  • GRAS (generally recognized as safe) for food use.
  • INCI name on cosmetic labels: Cannabis Sativa Seed Oil.
  • Reviewed and found safe in cosmetics.

Popular products containing Hemp Seed Oil

  • Manitoba Harvest Hemp Oil — Cold-pressed culinary oilManitoba Harvest · Food
  • Herbivore Emerald Deep Moisture — Hemp-oil-based facial oilHerbivore · Skincare
  • The Body Shop Hemp Hand Protector — Hemp-seed-oil hand creamThe Body Shop · Skincare

Product names and brands are shown for reference and belong to their respective owners.

Hemp seed oil vs CBD oil

They come from different parts of the plant: seed oil is pressed from seeds (no cannabinoids), while CBD oil is extracted from flowers and leaves (cannabinoids). Confusing them is the most common hemp-oil error — a seed-oil label promises nutrition and emollience, not CBD pharmacology.

The omega ratio

Modern Western diets run omega-6:3 ratios of 15:1 or worse, linked to inflammatory signaling. Hemp seed oil's ~3:1 ratio — close to the 1:1–4:1 range associated with traditional diets — makes it a practical dietary corrective alongside flax and fish sources.

Frequently asked questions

Will hemp seed oil make me fail a drug test?

No — seed oil contains no THC. Drug-test positives trace to cannabis flower products, not food-grade seed oil.

Can I cook with hemp seed oil?

Only raw or at very low heat — its polyunsaturated fats oxidize at low temperatures. Use in dressings, dips, and drizzles.

Is hemp seed oil good for acne?

Its linoleic-dominant profile suits acne-prone skin, which often shows depleted linoleate. It is widely used in non-comedogenic formulations.

The bottom line

Hemp seed oil is a nutritionally exceptional, skin-friendly oil — balanced omegas, no cannabis chemistry, and a clear place in both the kitchen and the bathroom cabinet.

References

  1. Hempseed oil: composition and health effects. PubMed Central. https://pubmed.ncbi.nlm.nih.gov/32644071/
  2. Hempseed oil in skin conditions. PubMed. https://pubmed.ncbi.nlm.nih.gov/30690465/
  3. Cannabis sativa seed oil — cosmetic ingredient review. CIR. https://www.cir-safety.org/ingredients