Parabens are common preservatives in cosmetics, but raise safety concerns due to skin absorption and potential hormonal effects. This study introduces a method to immobilize parabens onto TiO₂ nanoparticles to block skin penetration while retaining their antimicrobial property. We employed linker molecules to facilitate stable binding between parabens and TiO₂. Surface modification was confirmed via zeta potential and FTIR, with TGA quantifying linker loading. HPLC analysis demonstrated a 160% increase in paraben adsorption on functionalized particles compared to pristine TiO₂. In vitro assays using human dermal fibroblasts showed conformal cytotoxicity for the paraben-immobilized particles. Furthermore, enhanced antibacterial activity against Staphylococcus aureus is achieved. These findings suggest that anchoring parabens to TiO₂ nanoparticles offers a promising route for effective preservation with reduced dermal absorption risks of parabens.