the invention “ colloidal nanoscale carriers for active hydrophilic substances and method for producing same ” pertains to the field of medical , odontological or hygiene preparations , and is characterized by structures formed by hydrophilic polymers that contain active hydrophilic substances coated with a non - hydrophilic phase and surfactants with affinity for the components , forming an invert emulsion that allows the incorporation and controlled delivery of active hydrophilic substances , conferring properties such as protection against degradation processes , improvement of compatibility with the other components of the formulation in the final product , increase in the availability and / or bioavailability of the active substance in the medium of interest and controlled release of the active substance . the nanoscale carrier obtained by this method , called colloidal nanoscale carrier , can be used in various fields , such as the pharmaceutical field , cosmetics , personal hygiene products , veterinary medicine , agrochemicals and fertilizers , the food industry and the like . the invention proposes a kinetically stable system with an effective nanoscale structure that consists of nanoscale carriers formed by polymers emulsified in a non - aqueous medium in the presence of a surfactant with affinity for the two phases . this system is obtained by nanoemulsification of an aqueous phase of hydrophilic polymers emulsified in a non - hydrophilic phase that contains the surfactants , and is characterized by the implementation of two concepts that encompass the generation of an invert nanoscale emulsion and of polymer nanoparticles . the formulation has the novel technical effect of providing a polymer excipient with a nanoscale structure for delivering hydrophilic molecules suspended in a non - hydrophilic phase , which allows controlling the size of the nanoscale particles and modulating colloidal stability by means of process parameters .