GLASS. If you order 12 pieces, it will arrive in the countertop display you see in the photo. Effective for glass and mirrors, for a shiny and clean result without streaks. Let it act for a few seconds before wiping with a clean cloth. Ideal for daily cleaning of all types of windows, glass, and mirrors. Contains "linalyl acetate" (main constituent of bergamot and lavender essential oils), maleic acid, and natural fragrances. ONE TAB!!! THE REVOLUTION IN THE FIELD OF DETERGENTS! See how it works They are totally biodegradable cleaning tablets of a brand new design! One tablet dissolves and perfectly colors 750 ml.