I am a high school engineering student and I have a capstone project to do for this semester. My team has decided to make a mannequin head that can heat up to human body temperature so that students have a more realistic experience when applying bleach and dyes or any chemicals used by a cosmetologist. So does any cosmetology instructor ever have any problems with showing the students the effects different chemicals on hair with temperature similar to the human body or hair that has different temperature at different lengths?