Don’t Use Flat Paint in the Kitchen
Kitchen walls tend to collect grease and splatters from food. That’s why it’s important to pick a paint that will allow you to wash those surfaces when they get dirty.
Semi-gloss paints are a good choice here, because they wipe easily and are less permeable, meaning that contaminants are more likely to stay on the surface.
Hi-gloss paints can be even more stain-resistant, but the shiny effect of hi-gloss may be too much for a medium-to-large surface.
Stay away from flat paint on kitchen walls as you cannot scrub the surface and even a light wiping can remove some of the paint.