- Click on one of the blue links below.
- Click on the blue tab to Download f.lux.
- Open the Windows .exe file (or .app file on a Mac), when it’s installed, you should see f.lux’s control panel.
- Adjust your daytime/sunset/bedtime settings accordingly. The screen effect should be instantly noticeable.
- To revert back to your original settings, just quit f.lux.