- dishwashing liquid
- clear plastic holder (either cup or plate)
- small paintbrush (your finger will suffice)
- small plastic cup
- A tablespoon (15ml) measuring spoon
- 1 tablespoon (15ml) of Epsom salt, Table salt and sweet n’low
- warm water

1. Squeeze 3 drops of dishwashing liquid onto the center of your clear surface.
2. Use a paintbrush (or your finger) to evenly spread the dishwashing liquid over the surface.
3. While the soap dries, place a tablespoon of Epsom salts into your small plastic cup.
4. Add 3 tablespoons (45 ml) of warm water to Epsom salts in your cup.
5. Stir until all of the salt dissolves in the water.
6. Pour out a reasonable amount of the dissolved salt solution onto the dried areas of the detergent on the transparency. Use the bowl of the spoon to spread the solution as evenly as possible over the surface.
7. Allow the puddle to dry then see what happens. (This can take 15-30 minutes)