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.
However, this is normal, and actually indicates that the Propecia is working. Because hair growth takes time, it generally takes up to 3 months to notice a difference after taking Propecia every day. Thickening and strengthening of hairs that have become miniaturized tends to take six to 12 months.