FAQ

Circadian lighting changes throughout the day to match how your body naturally works. In the morning and daytime, it includes more blue light to help you feel awake and alert. After sunset, it removes that blue light so your body can start getting ready for sleep. It still keeps a soft touch of violet light so the room feels gentle and calm, while your body makes melatonin – the hormone that helps you fall asleep.

Your eyes have special cells that can sense blue light. This kind of light helps you wake up in the morning by boosting your focus and telling your body to make more cortisol – the hormone that helps you feel alert. But if you see blue light at night, it can block melatonin, the hormone that helps you sleep. That’s why the timing and color of light are both important for keeping your body on a healthy daily rhythm.

Your body runs on a 24-hour clock called a circadian rhythm. It helps you know when to wake up, go to sleep, and stay healthy. There’s a tiny part of your brain that acts like your body’s timekeeper. It needs blue light in the morning to stay on schedule. When your rhythm is in sync, you feel awake during the day and sleepy at night. But if it gets off track, it can make you tired, moody, or even affect your health.

Blue light (between 440 and 495 nanometers) is the one that gets in the way of melatonin production – the hormone that helps you sleep. Even a small amount of blue light at night can fool your body into thinking it’s still daytime. That makes it harder to feel sleepy. But violet light (around 420 nanometers) doesn’t get in the way of melatonin as much, especially if your eyes have already been in light for about 30 minutes.

Not during the day. Blue light is great for you in the morning and through twilight hours as it helps you feel awake, think clearly, and keep your body clock running on time. But at night, blue light can block melatonin – the hormone that helps you sleep. So it’s helpful in the morning, but it gets in the way in the evening.