Red and green traffic lights have been around since the 1800s, when British traffic officers used to rotate gas lamps that ...

In a new study published Wednesday, researchers conducted six clinical trials on 216 participants with mild to moderate acne and found that using at-home red and/or blue LED devices led to a 45.3% ...

Blue, red, white, and amber lights have all been found to trigger or worsen migraine. 6 5 Blue light has a reputation for being particularly painful, but that may be because we are exposed to it ...

That bright, blue-rich light signals to your brain that it’s definitively daytime, helping to anchor your internal clock and set up a proper sleep-wake cycle.