I have bruise around a belly button piercing that hasn't gone away after two years. are there any remedies for this?

Take out the: piercing. The foreign body in your skin may be causing irritation. You could be allergic to the metal in the contraption. Take it out and let the wound heal. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex. Get HPV vaccine.