This non-toxic UV sensor is suited to all skin tones. 'Runaway Rabbit' alerts you when you are approaching your daily maximum UV expsoure limit through a colour change.
Each pack contains 30 sensors which is enough for a month in the sun.
To use, simply apply the sensor to the back of your hand before you go outside. Follow normal sun safe practices and when you see the purple Runaway Rabbit turn to a dusty pink/brown it's time for you to get out of the sun.