How can you improve bilirubin levels?

Answer 1

If it is the mild benign rise known as Gilbert's syndrome there is nothing you can do and no reason to try.

If it is the exaggerated normal jaundice (high bilirubin levels leading to yellow skin) of newborn babies then "light therapy" with UV lights are usually used. In extreme cases exchange transfusion can be done. Glass blocks UV light so the common advice to put the baby in front of a window is not effective. Exposing the baby to direct sunlight and the elements is not safe.

In other situations the underlying cause (usually liver, gall bladder, or blood issues) needs to be addressed.