Review (2/5): Doesn't work well
I really did not care for this product. Everytime I tried to use it it was really thick and didn't go on well. Most of the time I was sitting outside when I did it so the next time I tried inside where it was cool and it seemed to go on a little better. I assume that it just doesn't do well when it is in the heat. On top of that the color only changes when it is an extreme change in temperature. I had to keep my hand under cold running water and even then only the tips of two of my fingernails changed color a little bit and then changed back as soon as I cut the water off.