Phototherapy (light treatment) is the process of using light to eliminate bilirubin in the blood. Your baby's skin and blood absorb these light waves. These light waves are absorbed by your baby's skin and blood and change bilirubin into products, which can pass through their system.For over 30 years, phototherapy treatment in the hospital has been provided by a row of lights or a spotlight suspended at a distance form a baby.hese light waves are absorbed by your baby's skin and blood and change bilirubin into products, which can pass through their system. For over 30 years, phototherapy treatment in the hospital has been provided by a row of lights or a spotlight suspended at a distance form a baby.
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