  We compute the bulk, $\zeta$, and shear, $\eta$, viscosity over entropy
density, $s$, for the QCD matter formed in small collision systems at LHC. We
consider a scenario of the String Percolation Model by proposing a global form
of the color reduction factor that describes both the thermodynamic limit and
its maximum deviation due to small-bounded effects. Our method involves
estimations at vanishing baryon-chemical potential, assuming local equilibrium
for string clusters in the initial state. To compute $\eta/s$, we employed a
kinetic approach that accounts QCD states as an ideal gas of partons, while
$\zeta/s$ is computed by using two different approaches: a simple kinetic
formula and the causal dissipative relativistic fluid dynamics formulation. Our
results align with Lattice QCD computations and Bayesian methods and are
consistent with holographic conjecture bounds. Furthermore, our findings
support the notion of a strongly interacting medium, similar to that observed
in nuclear collisions, albeit with a phase transition occurring outside the
thermodynamic limit.
