Abstract: The invention comprises an aerosol apparatus containing a non-flammable, water-based composition, the viscosity of which composition is from 0.2 to 30 mPa·s at 20° C., which apparatus is adapted in use to release cool water-based particles for the simultaneous topical application of thermal and mechanical kinetic energy stimuli for skin or body tissue cooling and for the generation of pulses in the body respectively, at a pressure of from 0.5 to 11 bars at 20° C. which pressure is created by using dimethyl ether or liquefied petroleum gas or a mixture of the two to discharge said water-based particles at a rate of from 0.1 to 8 gm/sec at 20° C. at a discharge angle of from 0.0° to 145° at 20° C., at a temperature which is higher than 0° C. and lower than the ambient temperature and with a particle diameter of from 10 to 600 microns.