2. Make Crystal Shine
Wash crystal in a sink lined with a dish towel and filled with hot water and your preferred dish soap. Wash each glass, one at a time. Drain this water and fill the basin again, retaining the dish towel to prevent the crystal from breaking. Put a teaspoon or two of ammonia in the dish water and soak for a moment. Pull out the crystal and dry with a soft towel. Lightly rub to a shine.