To prepare an effective and stable OD formulation, the solid active ingredient must first be finely milled to an appropriate particle size to ensure good dispersibility in the oil phase. Next, a suitable oil is selected, and oil‑compatible emulsifiers, dispersants, and thickeners are prepared. These components are blended into the oil and mixed until homogeneous. The milled active ingredient is then combined with a portion of the oil phase to form a fine dispersion. The remaining oil and any additional auxiliaries (if required) are added and mixed thoroughly. Finally, high‑shear mixing is applied to obtain a uniform and stable dispersion. Before packaging, the formulation must be evaluated for key technical parameters such as stability, dispersibility, and viscosity. The main components typically found in an OD formulation include: