I have quite uneven skin tone. Parts exposed to sun are quite darker than unexposed parts.What should I do? (Photos)

Parts exposed to sun(face and arms) are quite darker and unexposed parts like chest, upper arm, legs are quite light. What should I do to make colour of exposed parts lighter like the unexposed and further protect it from damage. I need a ligter skin tone on fave and arms as well. Which face creams, fave packs or other remedies should I follow to get an even skin tone and keep it protected as it is.