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.
All of my walls are neutral shades, mostly in the beige family. I then chose trim paint, and for the main living areas (dining, hallway) used a different color with a different sheen on the doors. In the bedrooms, the doors are the same color as the walls (different sheen) but not the trim.