Why do we get freckles and why are they more visible when it is sunny?

Question: Why do we get freckles and why are they more visible when it is sunny?
- Keywords:
  freckles,
  skin,
  sunny,
  visible
Asked by to Del, Catherine, John, Krishna, Mo Rassul on 18 Mar 2014. This question was also asked by .
- Adelle Thrower answered on 18 Mar 2014:
  
  freckels are caused by a change in the pigment of your skin called melanin. you see them more after sun exposure as the sun has an affect on the pigmentation.

Question: Why do we get freckles and why are they more visible when it is sunny?