How is science used by hairdressers?

I need to find out how hairdressers use science on the job.


I also need to know what sort of education in science would be needed to get a job as a hairdresser.


I also need a working example of how science would be used on the job.How is science used by hairdressers?
it's mostly skin and chemicals that you use the science.


But you can't just take a science class and be a hairdresser. You have to go to a cosmetology school.