6 doctors weighed in:

Will freezing temperatures affect head lice?

6 doctors weighed in
Dr. Laura Webb
Pediatrics
4 doctors agree

In brief: Yes

Yes, freezing temperatures may kill lice, but because it may take several days of freezing temperature this is not an effective means of getting rid of lice.
Instead, most often special shampoos are used. For lice that become resistant to these shampoos an oral medicine is sometimes prescribed.

In brief: Yes

Yes, freezing temperatures may kill lice, but because it may take several days of freezing temperature this is not an effective means of getting rid of lice.
Instead, most often special shampoos are used. For lice that become resistant to these shampoos an oral medicine is sometimes prescribed.
Dr. Laura Webb
Dr. Laura Webb
Thank
1 doctor agrees

In brief: Maybe

I assume you are not referring to freezing temperatures outdoors.
In spite of sub-zero environmental temperatures, the human body temperature remains relatively constant, around 98.6; assuming adequate clothing. Therefore sub-zero environmental temps will not kill lice. Direct application of freezing temps to lice will kill, if applied long enough.

In brief: Maybe

I assume you are not referring to freezing temperatures outdoors.
In spite of sub-zero environmental temperatures, the human body temperature remains relatively constant, around 98.6; assuming adequate clothing. Therefore sub-zero environmental temps will not kill lice. Direct application of freezing temps to lice will kill, if applied long enough.
Dr. Ronda Dennis-Smithart
Dr. Ronda Dennis-Smithart
Thank
Get help from a real doctor now
Dr. Shontae Buffington
Board Certified, Pediatrics
14 years in practice
856K people helped
Continue
108,000 doctors available
Read more answers from doctors