i love science. so much.

I just think that putting the nail polish onto my nails will not make sure that they are in the right conditions for a fair experiment. And also, I do not want to get told off and get another demerit. --" I also need to keep all of the different polishes under control with room temperature at the same pace and all.

So, instead of my nails, I'm going to apply one layer of FOUR different brands of a pink, I have no chosen out yet, onto some aluminium foil taped onto the table. I will time how long it takes to dry and then, I will rub sandpaper onto it, and see the durability of the nail polishes.

But...where can I get sandpaper?

and..is it okay for the nail polish to have different shades of pink? Because all of them are pink, but some are darker.