Your light bulbs are
messing with your brain.
Standard LEDs blast blue wavelengths 24/7, suppressing melatonin and disrupting your circadian rhythm. We test circadian lighting products so you can fix it.
Best Circadian Light Bulbs: Every Product Compared
OIO, TUO, Bon Charge, NorbSMART, Hooga, Philips Hue, WiZ, and Healthe — tested, compared, and ranked. One clear winner emerged.
Read the comparison →Reviews & Comparisons
Korrus OIO Review: The Circadian Bulb Nobody Knows About
500+ patents, Nobel laureate lineage, 68% more melatonin. So why has no one heard of it?
TUO vs OIO: Which Is Actually Worth It?
The two most advanced circadian bulbs compared on specs, science, and real-world use.
Why Your Philips Hue Isn't Circadian
Color temperature shifting is not spectral engineering. Here's why Hue falls short.
Do Amber Bulbs Actually Block Blue Light?
Three technologies, three very different results. The $5 Amazon bulb isn't what you think.
More comparisons: OIO vs Hue · OIO vs Bon Charge · OIO vs Hooga · OIO vs WiZ · OIO vs NorbSMART
Science & Guides
How Light Wrecks Your Sleep
The biology behind why your ceiling light matters more than your mattress.
How to Set Up Circadian Lighting
Room-by-room, hour-by-hour. Three budget tiers from $30 to $300.
What Is Melanopic Lux?
The metric that measures how light affects your clock — not just how bright it looks.
Smart Home
OIO + Google Home Setup Guide
Routines, voice control, and Nest integration.