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Thank you to this community for all the support through the years! We're spending a lot of our time on basic research and sensing, and we have a few small updates planned for f.lux, too. The main challenge as we learn more about the biology is to keep things simple enough--it's easy to make things complicated, and it's pretty hard (for me) to distill them to something that makes sense to most people.

Also, if you care about how your eyes and circadian system work, don't forget about all the light from outside your screen too.




Thanks for f.lux! I‘ve been using it for years, basically without ever touching it, it just runs in the background on every machine I use. Couldn‘t imagine living without it.


This was recently covered in the Huberman Podcast as well.

One should not only maintain screen color and brightness, but also room and overall environment color and brightness.

I bought a "smart" light after listening to that episode.

No clearly visible signs of improvement yet. But it certainly feels good.


The biggest advantage of smart lights I've noticed (I have the Hue Color Ambiance) is the simulated sunrise. No matter what time you want to wake up, it'll gradually get light just before your alarm goes off. This makes a noticeable difference in how I feel if I have to wake up early for something.


10 years ago flux inspired me to start down this path as well.

All the lights in our house automatically lower their color temperature and brightness at sunset every 15 minutes from 5000k to 2700k and 100% to 10%. SmartThings and the community created Circadian Daylight Coordinator have made this pretty straight forward to accomplish.

I don't have data, but anecdotally I can say it makes an appreciable difference in overall comfort.


Wow, this sounds amazing. I'm going to dig into it some more.


Which episode of Huberman did he discuss this on?


The one where he talks about managing your workspaces. It's a fairly recent one.


> don't forget about all the light from outside your screen too

Time for you to make us some great sunglasses :) or curtains..


Just in case: there are yellow glasses marketed specifically for use at the computer and for avoidance of blue light.

(This is not an endorsement, however.)


does someone have any idea if they really have the same effect than f.lux?


I got a pair of blue-blocking lenses that are much more aggressive than f.lux. Personal annecdata from my wife and I is that they are fantastic. I can feel my whole body relax when I put them on, and I can go straight to bed after using screens.

Went with these ones: https://spectra479.com/products/clip-on-lenses-blue-blocking...


They work pretty much the same way, so I think there shouldn't be a difference in regard to computer screens. As for the surroundings—I toyed with cycling glasses for a bit, which for some reason had amber-yellow plastic, and personally I prefer to just have yellow ‘evening’ lights in the rooms.

With cycling glasses, I had more of relaxing effect due to them keeping moisture on my eyes, instead of it being burned away by the winter heating.


My eye glasses filter it out but I honestly haven't been able to tell a difference.


More like ultra-bright leds :)


I'm using this now for years on my Mac, and due to the great configurability I prefer it to the builtin mode.

Thank you!


Is there a possibility to always make the cursor bright?

Thanks for f.lux.




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