This Berry Grows Where Crops Give Up, and It's Hoarding a Fat Almost No Plant Makes.

The Oasis Health Journal · Submitted July 13, 2026 · 11:18 AM ET

Most plants are quitters. Hand them bad soil, hard wind, and a winter that bites back, and they pack it in. Sea buckthorn does the opposite. It is a scrubby, orange-berried shrub that moves into the exact ground other crops abandon, which is why people plant it to hold eroding hillsides in place. And while it is out there thriving on spite, it quietly does something almost no other plant bothers to do. It makes omega-7.

You have met omega-3, omega-6, and omega-9. They get the magazine covers and the fish-oil endorsements. Omega-7 is the sibling that skipped the reunion. Its headline compound is palmitoleic acid, and in the plant kingdom it is genuinely rare. Sea buckthorn pulp oil is one of the very few plant sources that carries it in real amounts, sometimes 30 to 40 percent of the fatty acids. The other notable plant source is the macadamia nut, which tells you what kind of small, exclusive club this is.

Here is the twist that trips up the label-readers. One berry gives you two completely different oils. The oil pressed from the pulp is loaded with omega-7. The oil pressed from the seeds is a different animal, mostly omega-3 and omega-6, with omega-7 barely bothering to show up. Same fruit, two resumes. So if you are buying it for the omega-7, the only part of the label that matters is whether the oil came from the pulp (or the whole berry) or from the seed.

The most quotable evidence involves crying, or the failure to. In a double-blind, randomized trial out of Finland, adults with dry eye swallowed either 2 grams of sea buckthorn oil or a placebo every day for three months, running from fall into winter. One hundred people signed up and 86 finished. Winter dries eyes out, and tear film osmolarity (basically how salty and concentrated your tears get as the water evaporates) tends to climb. It climbed in everyone. But it climbed significantly less in the sea buckthorn group. Redness and burning leaned better too, though not every symptom cleared statistical significance in every slice of the data. Translation: not a miracle, and not nothing. A small, measurable nudge on a marker that genuinely matters for dry eye.

Skin is the other place the berry keeps auditioning. A 2023 randomized controlled trial tracked skin, blood, ocular, and even vaginal moisture measures in people taking oral sea buckthorn oil, the running theme being mucous membranes and hydration. An older four-month trial in people with atopic dermatitis found the pulp-oil group improved, while the seed-oil group did not reach significance, which fits the omega-7-lives-in-the-pulp story a little too well. Honesty check: in that same trial, the plain paraffin placebo also improved, the kind of result that keeps scientists humble. The likely mechanism is boring in the best way. Fatty acids like palmitoleic and linoleic acid are raw material for the skin's own lipid barrier, and a better barrier leaks less water. Less magic, more masonry.

None of this makes sea buckthorn a drug, and nobody should sell it to you as one. It is a food-grade oil with a rare fatty acid and a modest but real evidence trail for dry eye and skin hydration. If you would rather go topical, the berry also turns up in sea buckthorn skincare, and there are dedicated omega-7 formulas like ProHydra-7 built specifically around the hydration angle.

One note on how we handle it, because it matters more with oils than with, say, gravel. Fatty acids go rancid. A softgel that has been aging on a warehouse pallet since two seasons ago is not doing your tear film any favors. Our supplements are professional-grade and sourced fresh per order instead of pulled off a pile of old stock, so the shipping takes a little longer and the higher potency is the whole reason to wait. Oils, of all things, reward that patience.

Two cautions before you stock up. Sea buckthorn may modestly slow blood clotting, so if you take blood thinners or have surgery on the calendar, talk to your clinician and consider stopping well ahead of time. If you are pregnant, nursing, or on regular medication, same conversation. It is a hardy plant, but you are not a hillside.

This article is for education only and is not medical advice; please talk with a qualified healthcare professional before starting any new supplement.

Sources

1. Larmo et al. Oral sea buckthorn oil attenuates tear film osmolarity and symptoms in individuals with dry eye. J Nutr (2010)
2. The impact of oral sea-buckthorn oil on skin, blood markers, ocular, and vaginal health: a randomized control trial (2023)
3. Yang et al. Effects of dietary supplementation with sea buckthorn seed and pulp oils on atopic dermatitis (1999)
4. Coordinated regulation of high palmitoleic acid and oil accumulation in sea buckthorn berry pulp. PMC (2019)
5. Healthline: The top health benefits of sea buckthorn oil
6. WebMD: Sea buckthorn uses and risks