C12EO10 forms a regular core-shell structure with non-uniform core Our data-driven simulations for C12EO10 produce stable micelles in excellent agreement . Small-angle X-ray and neutron scattering (SAXS/SANS) data of a) 5 mg mL -1 C12EO10, and b) 10 mg mL -1 TX-100 micelles in water at 298 K. The absolute scattered intensity, I(q), is plotted as a function of the modulus of the total momentum transfer vector, q. For each panel, the SANS data are displayed on top with the highest intensity. The solid orange lines represent the best simultaneous fits using an ellipsoidal core-shell model.