What is the best skin product for pigmentation?

My skin has turned very dark after staying in the sun 4 a long time.....What is the best skin lightening product that I could use as the colour of my face is completely different from the rest of my body and its really bothering me...Please help!|||Maybe using a foundation that is a shade lighter than you face right now, if you go any lighter it would look really fake i think....|||You could look at natural skin lightening techniques.|||It is incredibly expensive, but Prevage by Elizabeth Arden will work quite quickly