It plays a key role in the metabolism of all living organisms. The human body produces approximately 2g per day of citric acid and decomposes it again and again.
It can be used for numbers of purposes: it is a food additive (E330), an additive in cosmetics and pharmaceuticals too, an acidulent in soft drinks as well as a pH regulator.
It has been acknowledged that it is also a descaling agent (descaling, removing and dissolving limescale) and a wonderful antioxidant. It is completely biodegradable too.
For small and large domestic appliances descaling. Dilute 1 or 2 tablespoons of citric acid in 1L of cold water and use this solution to descale coffee machines and kettles. Rinse with clear water afterward. You can also use this solution to descale taps, showerheads or pressure reducers. To remove limescale from your washing machine, put 6 to 8 tablespoons of acid in the drum and run on a cycle (90°C).
Remember that citric acid is a multi-purpose product. Click here for more information and recipes.