Alright winter is approaching, and many of us are dreading those awful flyaways from static electricity. In this article I will explain why we get static hair.
A bit of science about static hair
The moisture content of human hair probably provides a larger influence on static charge than any other variable. Increasing moisture in hair decreases its electrical resistance and therefore increases the conductivity of the fiber surface. As conductivity increases, the fiber surface is less prone to develop a static charge.
In simple words: the charges need to be kept flowing so that they don’t accumulate (remain static) on the hair. Too many like(positive) charges in one place causes the fibers to repel each other. The result:
Why do we get static hair in winter? In winter, the cold air creates less moisture (low humidity) in the environment, and accordingly the hair also retains less moisture. Data has shown that the relative moisture content of hair will adjust according to the humidity level of its environment. Thus in winter, there is accordingly lower conductivity (more static charges) in the fiber. As you can expect more symptoms of dry hair and static hair are thus observed.
Read here for ways to fight static hair in winter.