There is a debate going on now if there is such a thing as chlorine allergies (I will leave that up to the medical doctors). However, there is a general consensus that a small percentage of people are actually hypertensive to chlorine. There is also a decent amount of evidence on increased asthma in young athletes which are involved with competitive swimming in indoor chlorinated pool. Only time will tell, but consumers are not wanting to wait. This is why more consumers are seeking a chlorine alternative. If you fit in this category, I would love to hear your comments