Ever wondered what washing soda is or what you can do with it around the house? This guide has the answers you're looking for ...

Hard water can be softened by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column. Sodium carbonate, Na 2 CO 3, is also known as washing soda. It can ...

Add to a large jug or saucepan and pour over the boiling water. Then add your washing soda and washing-up liquid. Stir until dissolved and then add your essential oil or food colouring if preferred.