Tooth color change is an alteration that varies in cause, location and severity, which may be related to extrinsic factors, intrinsic factors or a combination of both; For this reason, dental whitening is one of the procedures most requested from dentists; more and more patients are looking for a better image and smile without considering the possible consequences. This is due to the constant advertising in the media; in addition, it has led to the appearance of certain products on the market that are used by consumers without any control from the dentist. Therefore, the objective of this review is to know the advantages and disadvantages of dental whitening with 35% hydrogen peroxide (PH) (ultradent) in the office and 10% carbamide peroxide (PC) (ultradent) for home use, with the aim of in order to guarantee the comfort of patients during use and to avoid possible adverse effects. The...