Which deficiency is behind a dry skin?

Dry skin is typically due to an essential fatty acid deficiency, specifically omega-3 fatty acids. While omega-6 deficiencies are rare, most people lack sufficient omega-3s. To address this, increase your intake of omega-3-rich foods such as fish oils, sardines, salmon, walnuts, chia seeds, and algae like blue-green algae and seaweed. These sources provide both direct and precursor forms of omega-3 fatty acids, which are crucial for maintaining healthy skin.