You mentioned two examples: (1) an existing fireworks stand that is allowed to operate at the same location although the sale of fireworks is otherwise prohibited; and (2) a sign that was erected in violation of a zoning ordinance but which has never been removed.
New hair will not grow back in the previously waxed area for four to six weeks, although some people will start to see regrowth in only a week due to some of their hair being on a different growth cycle.
Quick Answer. The exact length of time it takes for a plucked hair to grow back depends on an individual's hair re-growth cycle. Typically, plucked hair takes at least two weeks to grow back, and, in certain cases, re-growth occurs within four to six weeks. Hair plucking is typically performed with a pair of tweezers, and the hair is pulled out of the follicle at the hair root.