You must know how important it is to apply wall putty before applying paint on the wall. Wall putty gives a smooth surface to the wall and increases the life of paint. If you have any cracks or holes in your wall, then wall putty is a must. Although, it isn’t as easy as it sounds. There is a process to follow while applying wall putty. https://www.haaretzdaily.info/apply-wall-putty-before-paint/