This paper is devoted to the actual problem of cosmetology - the procedures of filament rejuvenation of face and neck, which become popular every year. Literature data on the efficacy of these methods are controversial. The authors of most works indicate the minimum number of complications in the practical absence of negative appraisal methodology. The issues of development of the indication for use of some types of filaments and optimal criteria of evaluation of the expected effect in clinical practice are relevant and are discussed in this paper. Taking into account the absence of objective information about long-term consequences, other practical aspects of filament rejuvenation, the authors on the basis of many years of research and experience has specified evaluation criteria and suggested own classification of cosmetic filaments used in the method of filament rejuvenation of face and neck. Installation of filaments with different cosmetic features allows to reaching three different anti-aging effects: lifting, reinforcing and bio-stimulation. The degree of manifestation of these effects depends on the installation method of the thread, but first of all - on the design of conductive filament and needle or cannula. Based on the above data, the authors propose to divide all known cosmetic filaments on the basis of their purpose, proceeding from the achieved effect for three species - lifting, reinforcing and bio-stimulating. The new classification can be used in practice to optimize the selection of filaments for rejuvenation of face and neck and to reduce unintended side effects. The proposed classification of filaments has the purpose of definition of a fundamental criterion for their beauty opportunities. The practical application of this classification contributes to ensure adequate choice of filaments to perform the procedure, reduce side effects and create realistic expectations of doctors and patients from the procedures of the rejuvenation of face and neck.