Wet Hair Sticks

Most recent answer: 10/22/2007

Q:
Why do hairs stick together when they are wet but not when they are dry?
- Courtney
The Abbey, Reading
A:
The hairs each stick to the water, and the water sticks to itself, because of the electrical attraction between the charged ends of water molecules. So the hairs can’t pull apart without either leaving one dry but they stick to water) or pulling parts of the water apart (but the water sticks to itself).

Mike W.

(published on 10/22/2007)