Sunscreen Bands New Adjustable Locking Design, 10 Count
Sunscreen bands monitor uv ray exposure and change color to let you know when it is time to reapply sunscreen and when to get out of the sun. They start out nude color, turn purple when activated (this is the point where sunscreen is applied to yourself and the band), when it fades to a lavender color that is your reminder to reapply sunscreen (to both yourself and the band), finally if/when it reaches a cream color, you have reached your daily recommended exposure and should cover up or get out of the sun.