Madrid or Barca ? , Coffee or Tea ? , Morning or Night ? , FB or ASK ? , School or Home ? , Internet or TV ? , Lap or Cam ? ,Black Berry or Iphone ? , Pasta or Pizza ? , Friends or Love ? , London or Paris ? , Mcdonalds or Hardees ? , Chocolate or Vanilla ?
The sun effects the melanin in both- melanin is the pigment stuff that gives skin and hair color. Melanin is also like skins natural sunscreen, basically it helps to protect against sun damage. So when your skin gets exposed to the sun it produces more melanin and makes your skin darker to protect itself. Your hair also has melanin for color, but the hair itself is dead and can't react to sun exposure. So the sun just bleaches out the melanin and lightens the hair =)