2 doctors weighed in:

Asian parents often tell their children not to sleep with their hair wet. Is there actually any scientific reason for this?

2 doctors weighed in

In brief: Yes

Looks like a rat's nest in the morning, and hard to comb!

In brief: Yes

Looks like a rat's nest in the morning, and hard to comb!
Dr. Anatoly Belilovsky
Dr. Anatoly Belilovsky
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Dr. Robert Kwok
Pediatrics

In brief: No

There is no scientific data about "sleeping with wet hair" that I am aware of.
Since hair is not alive, the inside of one's body doesn't communicate with the hair that is beyond the follicle (the body doesn't know if someone is a long-haired person with wet hair, or a short-haired person wearing a wet shirt). However, the wet pillows, sheets, and mattress might be more prone to bacteria and fungi.

In brief: No

There is no scientific data about "sleeping with wet hair" that I am aware of.
Since hair is not alive, the inside of one's body doesn't communicate with the hair that is beyond the follicle (the body doesn't know if someone is a long-haired person with wet hair, or a short-haired person wearing a wet shirt). However, the wet pillows, sheets, and mattress might be more prone to bacteria and fungi.
Dr. Robert Kwok
Dr. Robert Kwok
Thank
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