A lot has been written about lasers, but there are practically no books in which the topic of laser cosmetology would be dealt with "from" and "to." We decided to fix this, and in the new edition we collected all the information that will be useful to specialists - both those already working with light technologies and those just starting out. The book "Lasers in the Practice of Cosmetologist and Dermatologist" is devoted to modern laser and photo technologies and examines in detail the entire range of issues related to the use of high-energy devices, but also low-intensity laser devices.