Product review: BYS colour changing nail polish

I found this nail polish didn't change colour. Also it says it changes with your body temperature, which is a bit of a fail, because your body temperature doesn't change a lot(unless your sick-if you have a cold in the winter, your body temperature may go down a degree or two.) I tried putting my hand in ice and It didn't change, The colour it came in was nice, so it wasn't a waste of money. It may change ever so slightly over a week if you put it in hot water or cold water a lot. otherwise it doesn't. It doesn't do what it is meant to do, but the colour they come in are really nice. 



Rating: ★ ★ ★ ☆ ☆( 3 stars out of 5)