  We explore the out-of-equilibrium dynamics of the Quark-Gluon Plasma at zero
and finite net-baryon density based on an effective kinetic theory of Quantum
Chromo Dynamics (QCD). By investigating the isotropization of the longitudinal
pressure, we determine the relevant time and temperature scales for the onset
of viscous hydrodynamics, and quantify the dependence on the chemical
composition of the QGP. By extrapolating our results to realistic coupling
strength, we discuss phenomenological consequences regarding the role of the
pre-equilibrium phase at different collision energies.
