The invention relates to the field of cosmetology and for technology for obtaining cosmetic products for skin care. The method of simultaneous processing and obtaining cosmetic emulsion volumes involves placing the volume within the continuous-flow mechanical oscillation system where the resonant acoustic cavitation behavior is implemented, so that the acoustic wave from the wall of the channel falls perpendicular to the major edge of volume, and the material they are made of has a specific acoustic impedance being equal or close to the impedance of the liquid filling the channel system. The amplitude of the ultrasonic resonance oscillations exceeds the threshold of acoustic cavitation for the mixture of ingredients that are currently being processed.