Here, we combine FFC experiments and MD simulations to study the dynamics of water confined within two specific salt crusts, namely NaCl and Na 2 SO 4 . Experimental results reveal significant differences for the water dynamics for the two salts, which we reproduce with our MD simulations. To further explore how the presence of salt crusts affects this behavior, we then explore the dynamics of water in nanoslits composed of either NaCl or Na 2 SO 4 via MD simulations. For these systems, NMR relaxation times T 1 of pure water and salt solutions with different concentrations are computed, and the results are discussed in terms of the state of the water-salt interface, including the average orientation of the water molecules and adsorption of ions at the wall.