Trace or dietary minerals, are naturally occurring minerals in fruits and vegetables. The antioxidants present in trace minerals go a long way in effectively preventing wrinkles. Selenium is an important trace mineral that neutralises harmful free radicals that cause ageing. Copper is another essential element that keeps the skin firm and wrinkle-free. Rich sources of selenium can be commonly found in tuna, Brazil nuts, eggs, and whole grains such as brown rice, whole wheat and oats. Copper is also found in plenty in beans, lentils and shellfish. Thinking about skin tigtening treatments? Well you need to read this: Expert Reveals The Truth Behind Skin Firming Treatments