**4. Conclusions**

The use of the zeta potential measurements allows to determine the pH range in which a stabilizing agent is effective and can interact with the TiO<sup>2</sup> particles to improve its stability. Through the profiles of ζ = f (stabilizing agent dose), the exact amount that is required to achieve a surface charge density that improves the performance of the electrodeposition process is determined. Additionally, the zeta potential is a guide parameter that allows addressing if the electrophoretic deposition process is cathodic or anodic, using either a surfactant or a biopolyelectrolyte.
