Imagine picking nail color with the turn of a faucet, hot for one color, cold for another. The human body's average temperature is 98.6 °Fahrenheit (37 °C); however, extremities such as feet, arms and hands run slightly cooler than the core.
Temperature may also fluctuate when running your hands under cold or warm water, which is key for this nail polish to change color as it reacts to 90 °F or 32 °Celsius.
Hot one color, cold another - Check it out!