Sea Buckthorn for Dry Eyes: What the Clinical Research Shows

Last updated: 9 October 2026

Sea buckthorn is one of the very few foods that has actually been tested for dry, tired eyes. Its rare Omega-7, alongside Omega-3, is associated with supporting the tear film and the mucous membranes that keep your eyes comfortable. A peer-reviewed study published in the journal Nutrients found oral palmitoleic acid (Omega-7) restored tear secretion in a dry-eye animal model (NIH-published study, PMC), and there is a human trial too, covered below. If you spend your day staring at screens, this one's for you.

Is sea buckthorn good for dry eyes?

It may well be, and it has some research behind it — sea buckthorn has been studied specifically for supporting eye comfort and a healthy tear film. Dry, gritty, tired eyes usually come down to a tear film that isn't holding up, and sea buckthorn supplies the exact fatty acids linked to keeping that layer stable.

What do the human studies show?

The best evidence is a double-blind, randomized trial from Finland. One hundred adults with dry-eye symptoms were recruited and 86 finished. They took 2 g of sea buckthorn oil or a placebo oil daily for 3 months, from autumn into winter. Tear osmolarity (how concentrated the tears are, a key marker in dry eye) rose over the season in everyone, but the rise was significantly smaller in the sea buckthorn group. Redness was also significantly lower in the sea buckthorn group, while the difference for burning fell just short of statistical significance (Journal of Nutrition, 2010).

Two honest caveats. The trial used concentrated oil capsules, not juice, so a daily glass of juice shouldn't be expected to match it. And this is one trial from 2010; the researchers themselves called for further studies. It's encouraging evidence, not a guarantee.

How does sea buckthorn support eye comfort?

Omega-7 (palmitoleic acid) is associated with supporting the body's mucous membranes — including the delicate surface of the eye. Sea buckthorn is one of the richest natural sources of it.

Omega-3 fatty acids are associated with supporting the quality of the tear film, which is what stops eyes drying out.

Carotenoids and antioxidants, including the pigments that give the berry its orange colour, help protect eye tissue from everyday oxidative stress.

Why it matters if you're on screens all day

The modern epidemic of dry, strained eyes is largely a screen problem — we blink far less when we're locked onto a phone or laptop, and the tear film suffers for it. Sea buckthorn won't fix your screen time, but as daily nutritional support for your tear film and eye surface, it's one of the smartest foods you can reach for.

How to use it and what to expect

Around 15ml a day, diluted in water. Like most nutritional changes, eye comfort builds gradually over weeks of consistent use rather than overnight — the human trial ran for 3 months — so make it a daily habit. Start with 10–15ml for the first week — see our guide on how to drink sea buckthorn juice for more.

Alongside it, take regular screen breaks and blink deliberately. If your eyes are painful, red for days, or your vision changes, see an eye doctor rather than relying on a food.

The bottom line

For tired, screen-strained eyes, sea buckthorn's Omega-7, Omega-3 and antioxidants are exactly the kind of support the tear film thrives on, and at least one good human trial points the same way. As always, the benefit lives in the whole berry, cold-pressed — so those delicate omegas actually reach you intact.

Try Mevva's cold-pressed sea buckthorn juice →

Frequently asked questions

Can sea buckthorn help with dry eyes?
Sea buckthorn has been studied for supporting eye comfort and a healthy tear film, thanks to its Omega-7 and Omega-3 content. In a randomized trial of 86 completers, 2 g of oil daily for 3 months reduced the seasonal rise in tear osmolarity versus placebo. It works best as consistent daily nutritional support, not an instant fix.

How long does sea buckthorn take to help tired eyes?
Nutritional support builds over weeks of daily use rather than days, so consistency matters. The human trial ran for 3 months. A typical daily serving of our juice is around 15ml, diluted in water.

Is sea buckthorn good for people who use screens all day?
Screen use reduces blinking and stresses the tear film, and sea buckthorn's fatty acids and antioxidants are associated with supporting eye comfort. If you have an eye condition, check with your doctor first.

Does sea buckthorn juice work as well as the oil used in studies?
We can't say it does. The human trial used 2 g of concentrated oil daily. A juice serving contains far less oil, so treat juice as general nutritional support rather than a replacement for what was tested.