The science
Light after sunset keeps your body in daytime mode.
Your body keeps time by light. Screens and indoor lighting after dark tell it the day isn’t over, so melatonin, the hormone that signals night, is held back. It is one reason you can feel tired but wired. Three things decide how much of that signal gets through.
Night+Red lens
What reaches your eyes from a 5000K LED, with and without the lens
Independently verified by APR Laboratory (NATA #15508)
Unfiltered source modelled as a 5000K white LED. Lens curves from independently verified data.
Night+ red lens. Blocks 99.9% of blue light and 99.9% of green light. About 13% of all light passes through.
The science
Your body keeps time by light. Screens and indoor lighting after dark tell it the day isn’t over, so melatonin, the hormone that signals night, is held back. It is one reason you can feel tired but wired. Three things decide how much of that signal gets through.
Night+ addresses all three.
See the full verified results






