Chlorine in water does not cause hair loss or increases it. It’s a myth. There could be some other chemical in water, that was used to treat it, which may cause hair loss but chlorine alone is not known to be causing hair loss.

There have been many studies, conducted on swimmers, to determine if chlorine in swimming pool water leads to hair loss or accelerates it and it was found that chlorine in water was damaging the hair, causing discoloration but not causing the hair to fall out.

Conclusion: Chlorine in swimming pool water can cause damage to hair but does not make them fall out. In other words, chlorine in water does not cause hair loss.