As the coatings industry continues to prioritize waterborne systems, further research to provide coatings with comparable properties to those based on solvent-based systems is required. This paper, winner of the PCI Award for Technical Excellence at the 2023 Waterborne Symposium, presents a surfactant-free encapsulation process that enables the enclosure of polysiloxanes of arbitrary molecular weight in capsules of nanometer size in a simple, scalable process.