With the advancement in science and technology, Cosmetic dental treatments have been revolutionized. Tooth discoloration appears as a significant cosmetic problem that might require bleaching procedures. Intrinsic discoloration is commonly observed in endodontically treated teeth. The objective of this review was to discuss the clinical recommendations of using different internal bleaching techniques for treating intrinsic tooth discoloration based on the available evidence in the literature. Non vital bleaching technique is a minimally invasive procedure to treat intrinsic discoloration of endodontically treated tooth. However, certain protocols and precautions are necessary to minimize post operative complications. Further prospective researches are required to improve the quality of evidence.