How long does it take for a newborn jaundice to be illuminated with blue light?

Neonatal jaundice, can be divided into physiological jaundice and pathological jaundice two kinds. Generally for physiological jaundice, no treatment, in about 2 weeks after birth, will disappear. But if it is pathological jaundice baby, it is necessary to carry out blue light treatment, treatment time is about 2~3 days.