Evening Primrose and Borage Oil for Eczema: What 27 Trials Found
DOCTOR'S NOTES · ECZEMA EVIDENCE
Evening primrose oil and borage oil are sold as supplements for many concerns, including eczema. Their fatty-acid content gives researchers a reason to investigate them, but a biological theory does not establish a treatment benefit. It is worth looking at the controlled trials before adding another daily product.
The evidence review
A Cochrane review published in 2013 included 27 studies with 1,596 participants: 19 studied evening primrose oil and eight studied borage oil. The review evaluated oral use for established eczema. It found no meaningful improvement in global eczema symptoms over placebo. The included trials also did not settle the safety of long-term use.
The number 1,596 covers the entire review, not a single standardized product used by every participant. Different ways of measuring outcomes made some pooling difficult. Even so, the review did not support these oral oils as effective eczema treatments.
Oral supplements and topical oils are different questions
These results should not be transferred automatically to putting an oil on skin. Swallowing a supplement, applying a single ingredient and using a finished moisturizer involve different exposures. A label that lists an oil does not inherit the results of a trial using a different product or route.
| Before buying | What to check |
|---|---|
| Purpose | What specific eczema outcome is the product supposed to improve? |
| Evidence | Was that route and formulation studied against a relevant comparison? |
| Safety | Could medicines, pregnancy, age or other conditions change the risk? |
| Follow-up | Will trying a supplement delay a needed treatment review? |
Bring the bottle to a pharmacist or clinician
Share the exact ingredients and strength, rather than simply saying “a natural oil.” This is particularly important if you take other medicines or are considering a supplement for a child. Do not stop prescribed eczema care or use an adult supplement schedule for an infant.
Our omega-3 evidence guide and vitamin D article address different supplements. Each question needs its own evidence; an essential nutrient or naturally occurring ingredient is not automatically an eczema treatment.
What “no meaningful benefit” does and does not say
The review evaluated improvement in established eczema with these oral supplements. It does not claim that fatty acids have no biological role or that a person should remove ordinary foods from a balanced diet. It means that the controlled supplement evidence did not support the proposed eczema benefit. A nutritional mechanism and a useful clinical intervention are separate steps in the argument.
The publication date matters as well. A later, well-conducted study of a specific formulation would need evaluation on its own merits; a newer product name without new reliable evidence does not resolve the earlier negative findings.
Count the cost and complexity
When symptoms are disruptive, adding products can create expense and make the routine harder to follow. Ask whether money and effort would be better directed toward obtaining prescribed care, understanding application instructions or arranging a review. This is an individual practical decision, but it should begin with an accurate account of what the research did and did not find. Keep any supplement in the medication history so clinicians can assess the whole picture.
Follow the related evidence
The zinc supplementation evidence raises a separate nutrition question. Our herbal-treatment review explains why a broad natural label does not identify a standardized intervention.
Prepared by the Dr. Arsy editorial team. Sources checked November 8, 2026. Educational information supports a discussion with a qualified clinician; it does not diagnose or prescribe for an individual. The AI-created product image is an editorial illustration, not a patient photograph or a clinical result.