Linseed oil, also known as flaxseed oil, contains a high concentration of alpha-linolenic acid (ALA), an omega-3 fatty acid. There is some scientific evidence supporting its use in the management of dermatitis, particularly atopic dermatitis. Studies have explored the anti-inflammatory properties of omega-3 fatty acids, which can modulate immune response and reduce skin inflammation. Several small-scale clinical trials and animal studies have demonstrated that dietary supplementation with flaxseed oil may improve skin hydration, decrease skin sensitivity, and reduce symptoms such as itching and redness in people with dermatitis. For example, a randomized controlled trial published in Skin Pharmacology and Physiology (2011) found that flaxseed oil supplementation improved skin smoothness and decreased scaling in healthy women, suggesting potential benefits for skin barrier function.

However, rigorous large-scale clinical trials specifically targeting patients with dermatitis are limited, and the overall strength of evidence is still considered modest. Topical application of linseed oil has also been traditionally used, but scientific studies directly evaluating its efficacy for dermatitis are lacking. In summary, while there is some scientific rationale and preliminary evidence for the use of linseed oil in managing dermatitis, especially via dietary supplementation, more robust clinical data are required before it can be recommended as a primary or standalone treatment.