Unlike sleep masks that only block ambient light, the Sleep Therapy Mask has gently pulsing LED lights that help you wind down and fall asleep naturally. Simply choose Blue or Red and breathe deeply along with the “Points of Glo.” As the lights dim, you’ll feel yourself relaxing ...Unlike sleep masks that only block ambient light, the Sleep Therapy Mask has gently pulsing LED lights that help you wind down and fall asleep naturally. Simply choose Blue or Red and breathe deeply along with the “Points of Glo.” As the lights dim, you’ll feel yourself relaxing and drifting off to sleep.