Abstract: I briefly present a thorough analysis of the electromagnetic response of strongly coupled neutral plasmas described by the gauge/gravity correspondence. The coupling of the external electromagnetic field with the tower of quasi-normal modes of the plasmas supports the presence of various electromagnetic modes with different properties. Among them we underline the existence of negative refraction with low dissipation for a transverse non-hydrodynamical mode. Previous hydrodynamical approaches have shown the ubiquitous character of negative refraction in charged plasmas and the absence thereof in neutral plasmas. The results I present here extend the analysis to neutral plasmas beyond the hydrodynamical regime. As an application of these new insights, I will succinctly discuss the case of the quark gluon plasma in the temperature dominated regime.