i need a science fair idea???!!!?

Question

i want it to be something about hair i need it tonight!!!!!! HELP!!!!!!!!!

Answer 1

How about making a hygrometer using hair?
A hygrometer is an instrument used to measure the moisture content or the humidity of air or any gas. While the best known type of hygrometer is the "dry and wet-bulb psychrometer", you can make one using human hair.

Would that help? See reference below