The lag times between discrete dissolution steps partially stemmed from saturation of the water with NaCl, which temporarily halted dissolution. Further RH increases caused additional water condensation and a decrease in the droplet NaCl concentration, which spurred additional dissolution steps. These dynamics contrast dissolution processes in bulk liquid where the solute concentration is nearly constant with time and the particle dissolves continuously. Here a negative feedback loop was established where NaCl dissolution rapidly saturated the liquid droplet and temporarily halted dissolution.