Wall putty is beneficial to apply before painting to smooth uneven surfaces and create a strong bond between the wall and paint. White cement putty evens surfaces, is water resistant to prevent discoloration, and strengthens the bond between wall and paint. Acrylic putty also evens surfaces, increases paint durability, dries quickly, and provides a smooth, consistent finish. Understanding the benefits of different putties helps choose the best option for a home that is not painted frequently.