THE PRESENT INVENTION RELATES TO A PROCESS FOR MAKING A PARTICULATE SUBSTANCE. THE PROCESS COMPRISES PROVIDING AN EMULSION, OPTIONALLY A MICROEMULSION, COMPRISING DROPLETS DISPERSED IN A CONTINUOUS LIQUID PHASE. AT LEAST SOME OF THE DROPLETS OF THE EMULSION COMPRISE NUCLEI. THE DROPLETS ARE THEN AT LEAST PARTIALLY DESTABILISED TO FORM THE PARTICULATE SUBSTANCE.