There is some individual variation in the exact healing time with blue light for hemolytic pathologic jaundice. Phototherapy (the use of specific wavelengths and doses of light) is considered a safe and effective intervention to reduce serum or plasma total bilirubin levels TB. Sunlight can increase the risk of sunburn and skin malignancies. Therefore, unfiltered sunlight should not be used for phototherapy. Effective phototherapy decreases TB levels by at least 2-3 mg/dL (34-51 μmol/L) within 4-6 hours. Decreases in TB levels can be detected 2 hours after starting treatment. After 24 hours of phototherapy, patients can effectively reduce their initial TB levels by 25-40%. If TB levels have been effectively reduced, subsequent measurements can be taken every 8-12 hours. The dose of phototherapy is adjusted according to the subsequent measurements, and the dose of phototherapy can be increased if it is not effective, or interrupted for feeding if it is more effective. Therefore, the healing time is based on the test results, and patients are advised to follow the medical advice and standardize the treatment.