TX-100 forms an ensemble of multi-domain micellar structures Figure shows the results from Metainference simulations. Similarly to C12EO10, we observe solid quantitative agreement between the simulated and experimental scattering curves for both SAXS and SANS, which is shown by the overall lower χ 2 (considering both curves) compared to the fitted geometric scattering models (SI, Table ). The analysis of the assemblies found along the four Metainference replicas (Figure ) shows the presence of micelles with 41 ≤ Nagg ≤ 184. About 27 % of the assemblies are composed of less than 50 molecules, 36 % have between 107 and 115 molecules, 1 % are single molecules migrating between different micelles, and the remaining 36 % are larger assemblies.