Sun has a bleaching power due to its UV(ultra violet rays), they have a chemical reaction to the compounds found in matters. Long exposure to the sun can cause harmful effects of bleaching. From paper to clothes, utensils to humans all of them can be sun bleached. sun bleaching clothes help kill bacteria and remove stains with chemical compounds found in in detergents. Papers are sunbleached for textures, people get sun bleached but here the melanin rises up and causes skin tan. Hair can also be sun bleached here the pigment is lightened. Since it all involves UV and long exposure to UV rays for people can be harmful.
Answered by
Shirley
at
2:34 PM on September 28, 2007