Limescale is one of the most stubborn problems affecting bathroom taps, appearing as cloudy white marks on metal fixtures. It forms when mineral deposits left behind by hard water dry out, gradually hardening into a crusty coating that builds up around tap spouts. Over time, that rough surface can attract dirt, restrict water flow, harbour bacteria and even damage the metal.
A cleaning expert has revealed a simple solution using citric acid, a naturally occurring compound found in citrus fruits, to keep sink taps spotless.
Why citric acid works
Alexis Rochester, a chemist turned cleaning expert and founder of Chemistry Cachet, explained that citric acid breaks down limescale at a chemical level.
"Citric acid is a natural acid found in citrus fruits. It works so well because it acts as a chelating agent, meaning it binds to minerals like calcium and magnesium. This reaction actually breaks down mineral deposits, loosening buildup from the surface. This makes it easy to wipe everything away."
Standard cleaning products, soap and water are often ineffective because limescale solidifies and clings firmly to surfaces. An acidic solution is needed to dissolve the hard water deposits, which is what makes citric acid so effective. It softens and disintegrates the mineral content, allowing stains to be removed without vigorous scrubbing or harsh corrosive chemicals that could damage fixtures.
How to clean taps with citric acid
Crystallised citric acid is available in the cleaning section of most supermarkets for around £2 to £3. Lemon juice can be used as a substitute, but it contains a lower concentration of citric acid and will not tackle limescale as effectively.
- Dampen a cloth and wipe down the taps to remove surface dirt and residue.
- Mix one tablespoon of citric acid with a mug of warm water.
- Saturate a cloth in the solution and drape it loosely around the tap, covering all cloudy or discoloured areas.
- Leave the cloth in place for about 10 minutes so the citric acid can break down the limescale.
- Scrub gently with a soft sponge or an old toothbrush, and the stains should lift away easily.
- Rinse off the citric acid, then buff the tap with a dry cloth until it gleams.
The sink tap should then be spotless and noticeably more lustrous, with a simple and inexpensive routine that keeps it hygienic and gleaming.
