I took zolpidem (Ambien) for twelve years and managed to get off it a year ago by simply tapering and the stopping. Hi pitched tinnitus and occasional insomnia are still some of the after effects and by-products. The struggle to get off zolpidem was far worse than the tinnitus but worth it.
What exactly are frown lines? Frown lines are the lines in the skin which are formed by the movement of muscles of expression, so-called dynamic lines because they depend on motion for creation as opposed to lines from photo damage (lifetime sun exposure).
Cross-contour lines are very much an attitude about and approach to drawing. They are the lines that reflect the movement of your eye in and around what you see. While contour lines describe edges, cross-contours describe form and volume. These lines can follow planes of form, moving around and across objects as well as through them. Think of a topographical map--the lines move across the terrain. Cross-contour lines do the same thing.