The invention relates to the field of cosmetology and concerns technology for producing cosmetic skin care agents. The method for simultaneously processing and producing quantities of an emulsive cosmetic agent, each of which quantities has a different composition of ingredients in the oily and aqueous phases, and different emulsifiers and biologically active substances, by placing said quantities within a continuous-flow mechanical oscillatory system-passage, where a resonant acoustic cavitation mode is realized, is characterized in that quantities containing ingredients having a right-angled profile are immersed into the liquid-containing system-passage in such a manner that, from the wall of the system-passage, an acoustic wave falls perpendicularly to the main face of the quantity, and the material from which said quantities are made has a specific acoustic resistance equal or close to that of the liquid which fills the system-passage and has the resistance of the cosmetic agent mixture being processed, the amplitude of the ultrasonic resonant oscillations exceeds the acoustic cavitation threshold for the mixture of ingredients being processed at a given moment, taking into account losses in quantity during passage through the walls and the optimum temperature of the mixture, and the processing duration is determined experimentally in order to produce the required stability of the cosmetic emulsion. The method makes it possible simultaneously to produce a plurality of different emuslive cosmetic agents in the form of extremely thin monodispersed silicon emulsions having a submicron size in the discontinuous phase, and is effective for producing small quantities, which makes it possible to continuously produce cosmetic products for individual use.Linvention se rapporte au domaine de la cosmétologie et concerne des techniques de production dagents cosmétiques pour la peau. Linvention concerne un procédé simultané de développement et de production de volumes dagent
