The high density QCD and its asymptotic regime

In this contribution we discuss distinct formalisms for the high density QC D (hdQCD). We analyse the asymptotic regime of very high energies (high den sities) and demonstrate that the predictions of all approaches coincide in this regime. At very high densities the gluon distribution presents a parti al saturation and the structure function still increases with the energy bu t does not violate the unitarity boundary. Our conclusion is that the unita rization of the structure function is a general result, well-established by three distinct approaches for high dense systems.