What project to do for the Beauty and Science exhibition ?

I've thought of making soap, facial foam and the skincare stuff. However, I've could not found out how to make them.





Any ideas? How to do it?What project to do for the Beauty and Science exhibition ?
I am not sure this would work, but maybe you could do a little research on mascara since it is made from bat dung which probably takes some kind of scientific process and explain how it is made before applying it? Just an idea.





If not, it is really easy to make your own soap, even scented with your favorite smell and you can find inforation on how to do that at a store like Hobby Lobby, or Michael's, or any large store that has kits to make stuff at home.

eyebrows liner