Seborrhoeic dermatitis (SEA) is a chronic condition affecting 1-3% of the population, manifested by redness, scaling and greasy scabs located on the face, back and scalp. The disease results from excessive seborrhoea, proliferation of Malassezia fungi, hormonal changes and environmental and lifestyle factors. Diet plays an important role in treatment - vegetables, berries, vegetable fats, fermented foods and antioxidant spices are beneficial, while alcohol, simple sugars, highly processed foods and fatty foods exacerbate symptoms. A combination of a healthy diet, regular sleep, moderate physical activity and proper skin care promotes recovery and control of the disease.