Salmon fillet, walnuts, and fish oil capsules beside a skincare bottle: does omega-3 help acne

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified professional before starting a supplement, especially if you take blood thinners or other medication, have a medical condition, a fish or seafood allergy, or are pregnant.

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You read that fish oil calms inflammation. Acne is inflammation. So a daily capsule should help your skin, right? Maybe you have already bought a bottle and are wondering if it is doing anything.

The research on omega-3 and acne is more promising than for many supplements. But almost every study has a gap that most articles never mention. This guide walks through what each study actually tested, so you can judge it yourself. For the bigger picture first, see the full picture of what drives acne, from oil and hormones to diet.

Does Omega-3 Help Acne? The Short Answer

Possibly, as an add-on. Not as a replacement for proven acne treatment.

In 2023, JAMA Dermatology published a systematic review of dietary supplements for acne. The researchers looked at 42 randomized trials with 3,346 people in total. They rated each trial's quality.

Omega-3 fatty acids were one of only five supplement types with fair- or good-quality trials that suggested a possible benefit. The others were vitamin B5, vitamin D, green tea extract, and probiotics.

That sounds encouraging. But "possible benefit" is doing a lot of work in that sentence. Here is what the omega-3 evidence looks like up close:

  • One small randomized trial, with a control group that took nothing.
  • One larger study with no control group at all.
  • One genetic study that looked at blood levels, not supplements.
  • One trial of fish oil taken alongside prescription medication.

Each piece points in a similar direction. None of them settles the question alone.

That gap between a promising ingredient and proof is worth keeping in mind with any acne product. It helps to know how to check an acne formula's label against the studies it leans on. Now, the trial most articles cite.

The Randomized Trial: What It Tested and What It Didn't

The study most often cited for omega-3 and acne was published in Acta Dermato-Venereologica in 2014. It came from Seoul National University Hospital in Korea.

Here is how it was set up:

  • 45 adults with mild to moderate acne, mostly men, average age about 24.
  • Three groups of about 15 people each, assigned at random.
  • One group took 2,000 mg of omega-3 a day (1,000 mg EPA plus 1,000 mg DHA).
  • One group took borage oil with 400 mg of gamma-linolenic acid, an omega-6 fat.
  • The control group took nothing.
  • No other acne treatment was allowed for 10 weeks.

After 10 weeks, the average count of red, inflamed spots in the omega-3 group fell from about 10 to about 6. In the control group, it stayed at about 10. Blackheads and whiteheads also dropped in the omega-3 group but not in the control group. No serious side effects were reported.

The study was funded by a Korean government health research program and the hospital's own research fund. The authors declared no conflicts of interest.

Now the limits. The title calls the trial double-blind. But the paper states that the control group was not given any treatment. With no placebo capsule, the people taking omega-3 knew they were being treated. That can shape how people care for their skin and how they rate it.

Also, 15 people per group is small. And the borage oil group improved about as much as the omega-3 group. So the result may not be unique to fish oil. For how this trial compares with the other supplements tested, see where omega-3 sits among the dozens of acne supplements put to the test.

Are People With Acne Low in Omega-3?

A team at LMU Munich in Germany has run two studies on this question. Both used a blood test called the omega-3 index. It measures how much EPA and DHA sits in your red blood cells. The researchers used 8% to 11% as the target range.

The first study, published in Life in 2024, tested 100 people with acne. Ninety-six of them were below the target range. The average was about 5%. Men were more likely than women to have a severe shortfall, below 4%. People who ate legumes regularly or already took omega-3 had higher levels.

The catch: the study had no comparison group of people without acne. So it cannot tell us whether people with acne are any lower than people with clear skin.

The second study, published in the Journal of Cosmetic Dermatology in 2024, tried to raise those levels. Sixty people with acne and no prescription treatment followed a Mediterranean-style diet for 16 weeks. They also took algae-based omega-3, rising from 900 mg to 1,200 mg of EPA and DHA a day.

Their average omega-3 index rose from about 4.9% to 8.3%. Both inflamed spots and clogged pores improved. Quality of life improved too. No side effects were reported.

But there was no control group. And participants changed their whole diet at the same time. Their intake of cow's milk and dairy also dropped during the study. That matters, because milk has its own link to acne. We could not confirm the study's funding source. For more on that link, see what three large reviews found when they compared milk, yogurt, and cheese.

So the skin got better. We just can't say how much of that came from omega-3.

What a Genetic Study of Nearly 480,000 People Adds

Diet studies have a built-in problem. People who eat more fish may also differ in other habits. A method called Mendelian randomization tries to get around that.

Instead of asking what people eat, it uses gene variants that naturally raise or lower certain blood fats. Because genes are assigned at birth, they are less tangled up with lifestyle.

In 2025, the British Journal of Dermatology published a study using this method. Researchers at Seoul National University Bundang Hospital drew on data from about 115,000 UK Biobank participants and about 364,000 people of Finnish descent. They found:

  • People genetically inclined to higher DHA levels had a lower risk of acne.
  • A higher share of linoleic acid, a common omega-6 fat, was linked to a higher risk.
  • A higher omega-6 to omega-3 ratio was also linked to a higher risk.

The authors reported no conflicts of interest. The study was funded by the hospital's research fund.

There are important limits. The effect shrank when one gene variant near the FADS1 gene was left out. That gene helps the body process both omega-3 and omega-6. The data also came from people of European descent.

Most importantly, this study looked at lifelong, gene-driven blood levels. It did not test whether taking a supplement as an adult changes your acne.

Fish Oil Alongside Acne Medication

Isotretinoin is a strong prescription drug for moderate to severe acne. It often dries the skin and can raise blood fats called triglycerides.

A 2026 trial from Chulalongkorn University in Bangkok, published in the Journal of the American Academy of Dermatology, tested whether fish oil could help. It is one of the better-designed studies here:

  • 80 people aged 18 to 25 with moderate to severe acne.
  • All took low-dose isotretinoin, 10 mg a day, for 3 months.
  • Half also took 1 g of fish oil a day. Half took a placebo.
  • The trial was double-masked, so neither side knew who got which capsule.

Fish oil did not clearly clear acne faster. Both groups improved by a similar amount. But the fish oil group lost less skin moisture, and their triglycerides rose less. The authors reported no conflicts of interest.

If you take isotretinoin, do not add fish oil on your own. Ask the dermatologist who prescribed it.

Food or Supplement: Doses and Safety

There is no official omega-3 dose for acne. The studies above used between 1,000 and 2,000 mg of EPA and DHA a day.

Food sources:

  • EPA and DHA: fatty fish such as salmon, sardines, mackerel, and herring.
  • Algae oil: a fish-free source of DHA and EPA, used in the German study.
  • ALA, a different omega-3 found in plants: flaxseed, chia seeds, and walnuts. None of the acne studies above tested ALA.

What the safety data says, according to the NIH Office of Dietary Supplements:

  • No official upper limit has been set for omega-3s.
  • The FDA considers supplements with up to 5 g a day of EPA and DHA safe when used as recommended.
  • Common side effects are usually mild: an unpleasant taste, bad breath, heartburn, nausea, stomach upset, diarrhea, or headache.
  • In large trials of people with heart disease or at high risk, 4 g a day for several years slightly raised the risk of an irregular heartbeat called atrial fibrillation.
  • If you take warfarin or another blood thinner, talk to your doctor first.

Because the omega-6 ratio showed up in the genetic study, some people also cut back on fried and packaged foods high in omega-6 fats. That step has not been tested as an acne treatment.

When Omega-3 Is Not Enough

Here is the frustrating part. Some people take fish oil for months and see no change at all.

That fits the research. Even in the best trial, omega-3 was tested in mild to moderate acne, in a small group, over 10 weeks. Acne usually has several drivers working at once:

  • Hormones that push the skin to make more oil.
  • Pores that clog with dead skin cells.
  • Bacteria that thrive inside those clogged pores.
  • Diet patterns, stress, and sleep that add to the load.

One nutrient cannot cover all of that. If your acne is deep, painful, or leaving marks, a dermatologist should be part of your plan.

Alongside that, some people look at formulas that combine several nutrients studied for acne. The same careful reading applies. Check what is actually on the label, at what dose, and what kind of study backs each part.

Before You Buy an Acne Supplement

You now know more than most omega-3 headlines will tell you. The signal is real, but the trials are small, often unblinded, and sometimes mixed with diet changes. Bring that same lens to any product. A good place to practice is a side-by-side look at one acne formula's ingredients, doses, and the evidence behind each.

Frequently Asked Questions

Does omega-3 help acne?

It may help as an add-on, but the evidence is still early. A 2023 review in JAMA Dermatology listed omega-3 among five supplement types with fair- or good-quality trials suggesting a possible benefit. The main randomized trial had only 45 people, and its control group took nothing rather than a placebo. It is not a replacement for proven acne treatment.

How much omega-3 should I take for acne?

There is no official dose for acne. The studies used between 1,000 and 2,000 mg of EPA and DHA a day, for 10 weeks to 4 months. The FDA considers up to 5 g a day of EPA and DHA from supplements safe when used as recommended. Check with your doctor first if you take blood thinners or other medication.

How long does omega-3 take to work on acne?

The studies ran for 10 to 16 weeks, so there is no tested shortcut. In the Korean trial, changes were measured at 5 and 10 weeks, with the clearer result at 10 weeks. Give any change about three months, take photos in the same light, and change only one thing at a time so you can tell what helped.

Can fish oil cause acne?

The studies in this article did not report acne getting worse from omega-3. The Korean trial reported no serious side effects, and the German study reported none at all. Common side effects of omega-3 supplements are usually mild, such as an unpleasant taste, heartburn, or stomach upset, according to the NIH Office of Dietary Supplements. If your skin gets worse after starting any supplement, stop and see whether it settles.

Can I take omega-3 with isotretinoin?

Only with your dermatologist's approval. A 2026 placebo-controlled trial in Thailand found that 1 g of fish oil a day alongside low-dose isotretinoin did not clearly speed up clearing. It did help limit skin dryness and the rise in triglycerides. Isotretinoin can raise blood fats, which is why the trial tracked triglycerides, so any supplement you add belongs in that conversation. Your prescriber can decide whether that is useful for you.

Conclusion

Does omega-3 help acne? The research leans toward yes, as a supporting step. A small trial, a diet study, and a large genetic study all point the same way.

But the key trial had no placebo, the diet study changed many things at once, and the genetic study did not test supplements. Treat omega-3 as a reasonable experiment, not a cure. Eat fatty fish or choose a quality supplement at a studied dose, give it about three months, and keep working on the other drivers behind your breakouts.

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Fact-Checked By: Vijidsu, Founder & Content Researcher — verified the citations and sourcing in this article against peer-reviewed and clinical sources.