THE INVENTION RELATES TO SOLIDS POWDERS COMPRISING PARTICLES HAVING AN AVERAGE PARTICLE SIZE OF 0.1 TO 50 µM WITH PREDOMINANTLY A CORE-SHELL STRUCTURE, WHEREIN THE CORE COMPRISES AT LEAST ONE WATER-INSOLUBLE FATTY ACID SALT AND THE SHELL AT LEAST ONE ANIONIC, CATIONIC OR NON-IONIC EMULSIFIER, AND THE SOLIDS POWDER WHEN INTRODUCED INTO WATER OR AT LEAST ONE POLAR ORGANIC SOLVENT OR A MIXTURE COMPRISING WATER AND AT LEAST ONE POLAR ORGANIC SOLVENT, AT A TEMPERATURE OF 23°C WHILE EXPOSED TO A MECHANICAL FORCE, FORMS A COMPLETE DISPERSION WITHIN 60 MINUTES OR LESS.
