μ-profiles inside a 0.8 M_⊙ model at two ages. The black dotted lines are the μ profiles without accretion, the blue dashed lines represent the situation just after the accretion phase, and the blue solid lines are after the thermohaline convection mixing. The grey area represents the surface convective zones and the green one the region of lithium nuclear destruction. The vertical dashed-dotted lines represent the maximum depth of the thermohaline mixing.