Background: Heat-cured acrylic resins are used most often for denture bases because they are the best in terms of their physical and chemical properties, are easy to handle, and are affordable. But the surface is not hard enough, and oral bacteria such as Candida albicans stick to the resin. Objective: To assess how Radish oil affected heat-cured acrylic's impact strength and hardness. Patients and Methods: The intention was to create a total of (60) specimens. Twenty samples were made without additives (Control), and 40 had made with radish oil added at two different amounts (2.5 per cent, 5 per cent). Results: There was a Non-significant difference between the control and experimental groups in the impact strength test. In contrast, the hardness test showed a highly significant difference between the control and experimental groups. When radish oil had added, the impact strength and hardness had reduced in all concentrations. Conclusion: Adding radish oil decreased the hardness and impact strength of the two experimental groups.