  The description of the dynamics at high density parton regime is one of the
main open questions of the strong interactions theory. In this paper we address
the shadowing corrections (SC) in the scaling violations of the $F_2$ structure
function using the eikonal approach. We propose a procedure to estimate the
distinct contributions to the SC for $F_2$ and its slope and show that the
recent ZEUS data can be described if the SC in the quark and gluon sectors are
considered. The radius dependence of the SC is estimated. Moreover, we
calculate the superior limit above which the unitarity corrections cannot be
disregarded at low $Q^2$ and show that the recent HERA data overcomes this
bound.
