Chlorine is a bleach so it will not only affect the color of your swimwear but will also rot the elastic. Again, it is very important to wash your garments immediately when you are out of the water. To avoid these problems, place a towel underneath you. The intense heat affects the elastic fiber causing it to melt and go out of shape. The best thing to wear in the sauna is a nice thick towel.
All light colors can be slightly transparent when wet.
It only takes 10 - 15 years of periodic exposure to the sun to establish a risk for skin cancer. Most children get this amount of exposure by the time they leave school. We have more time for recreation today, consequently children spend much more time in the sun. We are now a more mobile society, thus we are able to cool off in the pool or at the beach, often at lunch time - the most dangerous time of the day. Years ago children cooled down inside until the late afternoon.