No, it is not necessary to use fat or oil on our hybrid frying pans. We recommend preheating the pan for a few minutes on low or medium heat before adding the food. This helps maximize the non-stick properties and preserve the quality of the coating. Our frying pans are designed to absorb heat more efficiently, so use lower heat settings than usual. You can add a little oil or butter, but make sure to preheat the pan as described above before adding the fat.