text: do i become dark if the water in which i swim has chlorine? i have heard this rumor among other swimmers, but as a matter of fact chlorine bleaches rather. i think chlorine has bleaching properties... ;p  when chlorinated water is regularly used such as in indoor pools or in taking baths and showers, it could eventually lighten your skin color...  but i'm not sure it works the same way when chlorinated water is used in outdoor pools. i think the supposedly effect of the treated water would eventually be negligible because of the exposure to the sun...