The properties of the laser, i.e. certain characteristics of electromagnetic radiation, have made it a popular tool in both medicine and cosmetology. Due to the wide range of lasers, low- or high-powered lasers are used, depending on the intended effects. Specialists' observations indicate a high level of safety of laser therapy, due to the infrequent occurrence of complications or side-effects, but, due to the energy that the laser "has" at its disposal, the possibility of the appearance of undesirable symptoms must be kept in mind.