Like slickshift stated, they will use some better additives in it by painting the ceiling with a flat paint, you scatter the reflected light in all directions, camoflaging that imperfection.
Can You Paint Ceiling With Wall Paint. They may not be as washable or scrubbable as a standard wall paint though. Will discuss typical interior ceiling paint, also wall paint, allowing you making an informed decision.
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You can go down onto the wall by around an inch. They may not be as washable or scrubbable as a standard wall paint though. I have used leftover ceiling paint as a first coat to some beat up walls to either hide dark colors or with a large nap roller to try to unify texture to a small degree.
This includes cutting in around window frames, base moldings, wall fixtures and door frames.
If you do this before attempting to paint the rest of the wall space, you can complete the room with a spotless finish. Having the right paint supplies can help make prep work and cleanup a clean your brushes with soap and water while the paint is still wet. That $3 plastic brush is going make it look like you smeared paint on the wall with a rake. Will discuss typical interior ceiling paint, also wall paint, allowing you making an informed decision.
