Do Head Lice Drown in Water?

A recent study examined the effects of immersion of head lice in water. The findings show that lice do not drown in water, even when placed in a water-filled container for up to 24 hours. While lice do survive, their survival rates are significantly lower than those of non-immersed lice. One theory for this phenomenon is that lice can withstand anoxia for several hours. A dye can be used to monitor lice’s respiratory system.

If you’ve tried everything from drugstore shampoos to prescription solutions, you may have tried home remedies for head lice. Using tea tree oil and mayonnaise to apply to your head has been known to work for some, but it can also irritate sensitive scalps. Moreover, long baths are not recommended, as long soaks in water do not kill the lice.

Although chlorine-treated water can kill head lice, it is not effective in killing the parasite. Moreover, the lice remain attached to the host during swimming. They won’t be able to move to another host during this time. In addition, lice can spread through direct contact with other swimming-related personal items. This includes towels used to dry the hair, combs, and brushes.