https://phys.org/news/2018-08-chemists-blue.html https://phys.org/news/2018-08-chemists-blue.html you can reduce blue light with Settings>>Display>>Night light

https://phys.org/news/2018-08-chemists-blue.html https://phys.org/news/2018-08-chemists-blue.html you can reduce blue light with Settings>>Display>>Night light settings>>Strength