Facts: When it comes to dryness, both internal and external supplementation can relieve the itch and ashiness associated with skin that is lacking its protective lipids. Oily fish are a species of fish, like trout, salmon, and sardines, that are rich in omega-3 polyunsaturated fatty acids. While there have not been large-scale studies that prove omega-3 supplementation improves eczema, many studies and clinical observations have shown that it helps in children and adults that suffer the condition. Researchers think that it may be because fish oil helps reduce leukotriene B4, an inflammatory substance that plays a role in eczema. Furthermore, it can improve symptoms of allergy and dermatitis. Studies also show that topical supplementation, with chia seed oil or sunflower seed oil for eczema, is also an effective way to deliver essential fatty acids to the skin and the systemic circulation. As with any supplements, clients should talk with their doctor before taking fish oil.