Omega-3 Fatty Acids for Skin Health

Research suggests that omega-3 fatty acids, particularly EPA and DHA, may offer meaningful benefits for skin health across several conditions, including atopic dermatitis, psoriasis, acne, and general skin barrier function. The evidence base includes multiple systematic reviews, two small randomized controlled trials in humans — one involving krill oil supplementation showing improvements in skin hydration, elasticity, and water loss correlated with omega-3 status — as well as a Mendelian randomization study indicating a plausible causal link between higher omega-3 levels and reduced acne risk, and mechanistic laboratory work suggesting EPA may beneficially alter the skin's ceramide profile. Studies indicate that omega-3s are generally regarded as safe, accessible, and potentially useful as a complementary approach to inflammatory skin conditions, though reviewers consistently note that much of the available clinical research involves small sample sizes, heterogeneous study designs, and a lack of large-scale controlled trials, which limits the strength of conclusions that can be drawn. The overall direction of the evidence leans supportive, but researchers across multiple reviews call for more rigorous and targeted clinical trials before definitive guidance can be offered.