Light element depletion as a function of age for solar models. Left panel: Lithium depletion as a function of age for models including an asymptotic treatment of the magnetic instabilities. Right panel: Beryllium depletion as a function of age for models including an asymptotic treatment of the magnetic instabilities. In both panels, models using the revised treatment of magnetic instabilities, namely Model D${}_{0.125}^3$, Model D${}_1^3$, and Model D${}_{256}^1$, are indistinguishable due to their identical behaviours.