Ask the Expert: Does Chlorine Kill Lice? The Truth About Swimming Pools and Head Lice

No. Chlorine does not kill head lice. While chlorine kills bacteria, it does not kill lice or their eggs (nits). Lice simply “hold their breath” and cling tighter to the hair shaft when submerged, making a swimming pool a common place for transmission through shared towels or head-to-head contact.

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