Cosmetology of the XXI century is undergoing a profound transformation. Under conditions of chronic stress, accelerated pace of life and constant exposure to the external environment, the skin ceases to be an exclusively aesthetic object and becomes a reflection of the body's adaptation processes. This book is devoted to recreational cosmetology, a modern scientifically based direction that considers cosmetology as a recreational technology and a form of supportive recreational therapy aimed at restoring, preventing and maintaining the functional state of the skin within the physiological norm. The author offers a systematic approach based on working with the skin's adaptation resource, reducing stress load and forming sustainable recovery processes. The book discusses the interrelationships of the skin with the nervous immune and vascular systems, the influence of stress and the environment, the principles of building sustainable cosmetology protocols and the new professional role of the cosmetologist of the XXI century as a specialist in restoration rather than correction.