â How long does nicotine stay in your system (hair tests) This is a reliable method to measure long-term nicotine use, but is an expensive method of testing. This method is extremely accurate for a period of up to 3 months after stop smoking, and can detect nicotine use for up to 1 year after quitting. â How long does nicotine stay in your system (system clean) Most people believe that nicotine is out of your system in just 3 days, but that is not correct.
1 White ceilings also keep the focus on the color of the walls while making the walls appear brighter.  Should you decide to opt for a true color on your ceiling, do not use the same color on your walls.
Traditional way is to paint ceilings first. Cut in the walls, roll 'em. And then do all the trim last. But lately I find it much easier to wall paint around a window, then to paint that little 1/2 edge of molding along the wall. And if you are going to double coat the walls there is also a little twist. So the new way to do a room is: Do the ceilings first, then do all the trim 2 coats, except baseboard - do just one coat. If you are going to do one coat on the walls - cut 'em in and roll 'em.