Sea buckthorn oil is used for skin repair, dry eye relief, digestive protection, and cardiovascular support. Extracted from the bright orange berries of a thorny shrub native to Europe and Asia, it’s one of the few plant oils that contains a meaningful concentration of omega-7 fatty acids alongside vitamins E and A precursors. The oil comes in two forms, each with a slightly different nutrient profile, and the growing body of research behind it explains why it keeps showing up in supplement aisles and skincare products.
Seed Oil vs. Pulp Oil
Sea buckthorn produces two distinct oils, and the difference matters depending on what you’re using it for. The seed oil is rich in polyunsaturated fats: linoleic and linolenic acid make up more than 83% of its total fatty acids. It’s lighter in color and better suited for internal use and sensitive skin. The pulp (or berry) oil, pressed from the fruit flesh, has a deep reddish-orange color and a completely different fat profile. It contains up to 52% palmitoleic acid, an omega-7 fat rarely found at such high levels in plants. This omega-7 content is largely responsible for the oil’s reputation in skin and mucous membrane health.
Beyond fatty acids, the two oils differ in their vitamin E and sterol content. Both carry antioxidants, but non-encapsulated sea buckthorn oil delivers roughly 2 mg of beta-carotene per 100 grams, along with alpha-tocopherol levels in the range of 64 to 89 mg per 100 grams. That combination of fat-soluble vitamins and essential fatty acids is what gives both versions of the oil their biological activity.
Skin Healing and Protection
Sea buckthorn oil’s best-supported use may be for skin. Applied topically, the seed oil accelerates wound healing in burn models by increasing wound contraction and boosting collagen production, specifically the type III collagen that forms the early scaffolding of new tissue. It also raises levels of proteins that promote new blood vessel growth, which helps deliver nutrients to damaged skin faster.
The oil’s anti-inflammatory effects go deeper than surface healing. In animal models of eczema-like dermatitis, topical application reduced skin thickening, calmed the immune cells driving the allergic response, and lowered the chemical signals that recruit more inflammatory cells to the area. Similar results appear in psoriasis models, where the oil reduced swelling and suppressed the chain of inflammatory signals responsible for the thickened, scaly patches characteristic of the condition.
There’s also UV protection. Sea buckthorn seed oil helps shield skin cells from sun-induced damage by preserving the cell’s natural antioxidant balance and reducing the breakdown of fats in the skin membrane. This doesn’t replace sunscreen, but it suggests value as a complementary ingredient in skincare routines. Clinical trials for atopic dermatitis have used 5 grams daily of seed or pulp oil for four months.
Dry Eye Relief
If you deal with chronically dry, gritty, or burning eyes, sea buckthorn oil is worth knowing about. A double-blind study of 100 participants found that a combined sea buckthorn oil (blending seed and pulp fractions) improved dry eye symptoms and, critically, slowed the rise in tear film osmolarity. That’s the concentration of salts in your tears, and when it climbs too high, it’s both a hallmark and a driver of dry eye disease. Keeping osmolarity stable means the tear film stays more protective and comfortable.
The dosage used in dry eye research is 1 gram taken twice daily for three months. The omega-7 and omega-3 fatty acids in the oil are thought to support the oily outer layer of the tear film, which prevents tears from evaporating too quickly.
Stomach Lining and Digestive Health
Both the pulp and seed oils protect the stomach lining in preclinical research. In models of stress-induced and chemically induced gastric ulcers, both oils significantly reduced ulcer formation and promoted healing of existing ulcers. The mechanism works on two fronts: the oils decrease the secretion of stomach acid and pepsin (the enzyme that breaks down protein and can damage unprotected tissue), while simultaneously increasing the production of the protective mucus layer that coats the stomach wall. They also appear to calm gastric smooth muscle activity, which may explain the pain-relieving effect observed alongside the physical healing.
The pulp and seed oils performed with similar potency in these studies, so either form may offer digestive support. Traditional healers have long recommended roughly 20 grams of the whole fruit daily, though concentrated oil supplements deliver the active compounds in much smaller volumes.
Cholesterol and Heart Health
Several human trials have tested sea buckthorn’s effect on blood lipids, and the results vary depending on the form consumed. In a randomized crossover trial of 80 overweight women, sea buckthorn oil specifically lowered total cholesterol, LDL cholesterol, and an intermediate lipoprotein fraction called IDL over 30 days. Dried sea buckthorn berries, by contrast, mainly affected triglycerides and VLDL (the particles that carry triglycerides in the blood).
A separate double-blind trial in patients with high blood pressure and high cholesterol found that sea buckthorn seed oil at 0.75 mL per day for 30 days decreased blood pressure, cholesterol, oxidized LDL, and triglycerides. Oxidized LDL is the form most strongly linked to arterial plaque buildup, so reducing it carries particular significance for cardiovascular risk. Another trial using 300 mL of sea buckthorn juice daily for eight weeks raised HDL (the protective cholesterol) by 20% in healthy men, though it also increased triglycerides, highlighting that the form and dosage shape the outcome.
Typical Dosages Used in Research
There is no single standardized dose for sea buckthorn oil, but clinical trials provide useful reference points. For dry eyes, researchers used 2 grams daily (split into two doses) for three months. Skin conditions like atopic dermatitis were treated with 5 grams daily for four months. Cardiovascular studies used either the oil at roughly 4 grams per day or the equivalent of about 100 grams of fresh berries in dried form, typically for 30 days. For postmenopausal symptoms, including vaginal dryness, 3 grams daily (split into two doses) over three months was the standard protocol.
Sea buckthorn juice has been used at volumes up to 300 mL daily for eight weeks. Overall, clinical trials have ranged from 5 to 45 grams of various sea buckthorn preparations without reports of serious adverse effects. The oil does have mild blood-thinning properties: one trial specifically measured its effect on platelet aggregation at 5 grams per day over four weeks. If you take anticoagulant or antiplatelet medications, that overlap is worth discussing with a pharmacist or physician before adding the supplement.
How to Choose a Supplement
When shopping for sea buckthorn oil, the label should specify whether it’s seed oil, pulp oil, or a blend. Seed oil is the better choice for internal inflammatory conditions and general omega-3 and omega-6 support. Pulp oil, with its high omega-7 content, is more targeted for skin application, mucous membrane health, and dry eye support. Many supplements combine both, which mirrors what was used in the dry eye trial.
Look for oils extracted through cold pressing or supercritical CO2 extraction, which preserve the heat-sensitive vitamins and fatty acids. The oil should be a deep orange to reddish color, especially the pulp variety. Pale or nearly clear oil may indicate heavy refinement or dilution. Softgel capsules are the most common delivery format for oral use, while pure oil in dark glass bottles works for both topical and oral application.