The fact that at the limit of solution stability, the nucleation of NaCl follows a non-classical, multi-step pathway has been further corroborated by the work of Bulutoglu et al. , where the nucleation mechanism of NaCl is analysed by performing free energy calculations and by developing a theoretical approach based on the compositecluster model able to interpret the atomistic simulation results. Most notably, fitting the composite-cluster model to simulation data revealed that beyond the limit of solution stability, the amorphous salt clusters are thermodynamically favoured compared to the aqueous solution, thus further validating the existence of a two-step nucleation pathway for NaCl at high supersaturation.