I don't have any no poo info about the chlorine after swimming, but my hairdresser told me that if your hair is wet before you go into the pool it absorbs less chlorine. She is also the one who recommended I use bs in place of shampoos to remove hard water residue from my hair. So maybe the bs would work on chlorine too? Do you have light or dark hair? If it is light, you'll have to keep an eye out that the chlorine doesn't turn it green. I would think some extra conditioning when you are in the pool a lot would be helpful to avoid the chlorine drying your hair out.