  The LHCb detector's forward geometry provides unprecedented kinematic
coverage at low Bjorken-$x$. LHCb's excellent momentum resolution, vertex
reconstruction, and particle identification enable precision measurements at
low transverse momentum and high rapidity in proton-lead collisions, probing
$x$ as small as $10^{-6}$. In this contribution, we present recent studies of
low-$x$ physics using the LHCb detector. These studies include charged hadron,
neutral pion, and $D^0$ production in proton-lead collisions, as well as
charmonium production in ultraperipheral lead-lead collisions. Future prospects
and implications for the understanding of low-$x$ nuclear PDFs and parton
saturation are also discussed.
