Lubricant not really dry: no leaves a light oily film that can stain car seats, but really facilitates sliding. Aerosol bomb practice: used upside down, the pipe (removable to spray a surface) like in place. The bomb uses all proceeds to the end. Efficient product on both rails of a door window on car door rubber (to prevent it sticks when it snowed and it has re-frozen). Good product, Facom what ...