To prevent chlorine rashes, use either a waterproof sunscreen or a pre-swimming lotion to create a barrier between the skin and the water. After swimming, shower immediately to rinse off the remainders of the chlorine, then moisturize heavily. Some post-swimming lotions are designed to neutralize chlorine.
Chlorine rashes are usually caused by repeated exposure to chlorinated water or the presence of too much chlorine in the water. Once the rash has formed, the best way to treat it is by staying out of the water until the rash goes away; however, if this is not feasible, applying lotions and sunscreens to minimize the amount of contact the skin has with the water can protect the skin long enough to reverse the damage.
Before entering a pool, shower thoroughly. Make sure enough time has passed since application of lotion or sunscreen to ensure that the water does not rinse off the barrier. After exiting a pool, shower again with antibacterial soap. Chlorine is necessary to kill potentially harmful bacteria in the water, but if a pool has not been drained and cleaned recently or if the chlorine concentration is too low, the water can also hold parasites and bacteria that can cause more serious skin infections and rashes. Any rash that lasts longer than 10 days should be showed to a doctor.