I am following the Blender Guru donut tutorial and i use viewport shading so i can see the supposed rendering result. It clearly shows gloss on the icing, but when i click 'render the image' the gloss is no longer there. I tried to increase the power on the lamp but it didn't do anything to the gloss. I also tried to swith my render engines from eevee to cycles but it didn't do anything either. Please tell me what i'm doing wrong.