Sea Buckthorn Oil: Uses, Benefits, Dosage & Safety
Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy
Quick summary
Sea buckthorn berry/seed oil is rich in omega-7 (and other fatty acids), vitamins and antioxidants, used for skin, dry eyes and mucous-membrane health. Evidence is modest but supportive for skin and dryness.
What is Sea Buckthorn?
Sea buckthorn (Hippophae rhamnoides) is a bright-orange berry whose fruit and seed oils are unusually rich in omega-7 (palmitoleic acid), other fatty acids, carotenoids and vitamins C and E. It's used orally and topically for skin, dry eyes and mucous-membrane support.
What Sea Buckthorn is commonly used for
In supplements, Sea Buckthorn is most often included for skin & anti-aging support. It is used as nutritional support, not as a treatment for any medical condition — the distinction matters, because the claims on a sales page are often stronger than the evidence allows.
How Sea Buckthorn works
Sea buckthorn's fatty acids (especially omega-7) and antioxidants support skin barrier function, hydration and the health of mucous membranes (eyes, mouth, vaginal tissue). Topically it's used to support skin repair and appearance.
What the evidence says
Here's an honest snapshot of what published research suggests about Sea Buckthorn — including where the evidence is limited.
- Some studies suggest oral sea buckthorn oil can improve skin hydration and ease dry-eye and mucous-membrane dryness. (PubMed research)
- Topical use has supportive but limited evidence for skin appearance and barrier support. (PubMed research)
Typical dosage used in studies
Oral studies have used a few grams of sea buckthorn oil per day; topical use varies. This is research information for context, not a recommendation — confirm what's appropriate for you with a healthcare professional.
Side effects and safety
Generally very well tolerated orally and topically.
Medication interactions and who should avoid Sea Buckthorn
Medication & safety check
It may have mild blood-thinning and blood-pressure-lowering effects; caution at high doses with related medications.
This is general information, not personal medical advice. If you take any medication, confirm it's safe to combine with Sea Buckthorn with your doctor or pharmacist first.
Sources & further reading
The summary above is drawn from peer-reviewed research and authoritative references. For general, authoritative background you can also consult:
- PubMed research on Sea Buckthorn
- NIH Office of Dietary Supplements
- NIH National Center for Complementary and Integrative Health
- MedlinePlus (U.S. National Library of Medicine)
Frequently asked questions
What is sea buckthorn used for?
Skin hydration, dry eyes and mucous-membrane health, via its omega-7 and antioxidants.
What is omega-7?
Palmito, an omega-7 fatty acid (palmitoleic acid) abundant in sea buckthorn, linked to skin and mucous-membrane support.
Is sea buckthorn safe?
Yes, generally very well tolerated orally and topically.
Can it help dry eyes?
Some studies suggest oral sea buckthorn oil can ease dry-eye symptoms.
Related ingredients to explore
Ingredients often studied or formulated alongside Sea Buckthorn — useful for understanding the full picture of a formula.