Supplementing with fish oil has already shown therapeutic benefits in treating several skin conditions, including atopic eczema, acne, psoriasis, and even burns. Local treatment with fish oil may also be a useful complement, although more clinical studies are needed, according to a review published in the Journal of Cosmetic Dermatology. Since many skin disorders involve chronic inflammation, it is generally recommended to ensure fish oil is taken at a therapeutic dose. Fish oil also helps counteract dry skin, which is more vulnerable.

Atopic eczema primarily affects children and is also known as childhood eczema or asthma eczema. A deficiency of vitamin D during pregnancy alone increases the risk that the child will develop the condition. According to a Swiss study published in Nutrients, supplementation with vitamin D, fish oil, and the fatty acid GLA can alleviate various symptoms of atopic eczema in children.