I am thinking about doing an experiment involving hairspray. I want to find which hairspray holds hair in position for the longest.
There might be alot of variabes , like how the different types of hair could effect the time.
I dont know where i could find the hair i need.
I would keep the experiment controled by using the same type of hair for all the hair sprays but i think it would be difficult to control how much of each spray is put into the hair. the controlled variable would then be hair with no hold in it.