Bleaching is the technique which is meant to change the coloured substances (internal or intrinsic stains) within the structure of tooth using reactive oxygen species (ROS).The three commonly used methods are at-home (professionally dispensed), in-office (professionally administered), and over-the-counter (self-administered).Among a wide variety of bleaching agents available for vital teeth, hydrogen-peroxide and carbamide-peroxide based agents are the most commonly used.Laser-assisted bleaching is the procedure that uses laser beam to speed up the release of free radicals present within the bleaching gel, thus decreasing the time of procedure. Efficacy of laser bleaching is compared with power bleaching by various researchers but still results remained controversial. Thus the present review was conducted to assess the efficacy of conventional bleaching using hydrogen peroxide and laser bleaching technique for a vital tooth.