does not work well [SEP] i really did not care for this product everytime i tried to use it it was really thick and did not 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 does not 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