• A bowl of citric acid granules with lemons showing its natural
  • A bowl of white small bath bombs using Citric Acid and Bicarb Soda
  • Jar of citric acid on a toilet as toilet cleaner
  • A kettle with a spoon full of Citric Acid being poured in as a natural descaler
  • Citric Acid granules in a wooden bowl
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Citric Acid

Citric Acid

$11.50
$11.50
Sale Sold Out

An excellent alternative to cleaning vinegar.

Citric acid does many of the same jobs in powder form: no plastic bottle, no smell and it stores easily too!

  • Removes limescale and mineral build-up
  • Helps dissolve soap scum and hard water residue
  • Works in both powder and diluted liquid form
  • Concentrated and cost-effective

PRODUCT DETAILS

What is it
In cleaning, it appears as a fine white crystalline powder or granules. It dissolves easily in water and has a pH of around 2 to 3 in solution, making it meaningfully acidic without being aggressive or corrosive in the way that industrial acids are.

How you can use it
Citric Acid is used in the following recipes

✅ What you can use it on

  • Stainless steel or chrome taps, sinks and shower fittings
  • Glass and windows
  • Ceramic and porcelain (toilets, basins, tiles)
  • Plastic kettles and coffee machines
  • Most washable fabrics (as a rinse aid, not a direct treatment)
  • Grout (light limescale and mineral deposits)
  • Dishwasher interior


❎ What to avoid
Citric acid is an acid. Used on the wrong surfaces it will cause permanent damage.

  • Natural stone such as marble, granite, travertine, limestone
  • Acid-sensitive metals such as brass, copper and bronze
  • Grout in poor condition
  • Wool, silk and delicate fabrics
  • Aluminium

Do not mix acids with alkaline ingredients. Mixing citric acid directly with washing soda, bicarb or soap in solution neutralises both. They work best used separately or in recipes specifically designed to combine them like bath bombs!

🫙 Storage and shelf life
Citric acid is one of the easiest ingredients in the kit to store. Keep it in a sealed, airtight container in a cool, dry location and it has an indefinite shelf life. 

📦 Packaging
Available in home compostable Earth Bags or reusable glass Apothecary Jars (750ml size). The earth bags are plastic free way to get the goods to you but not ideal long term storage.

⚠️ Safety
Although this is food grade quality, consumption is not recommended as we are not a food safe premise.

HANDY RESOURCES

Go deeper
Learn more about this amazing ingredient including the chemistry of how it works.

Two important links
The Recipe Hub shows you what commercial cleaning products you can replace, with step-by-step details on how to do it.

The Learning Hub deep dives into the ingredients, looking at what each one is and why it works.

Learning Hub

FULL GREEN ETHOS

At Under Your Sink, our green ethos runs through everything, from what we source to how it’s packaged.

We choose simple, effective ingredients that are biodegradable, vegan-friendly, cruelty-free, ethically sourced and septic safe. Our plastic-free packaging options, including home compostable Earth Bags and refillable Apothecary Jars, help reduce waste without compromising on quality.

Fewer ingredients. Less waste. Better cleaning. All the important boxes ticked.

View full details

Know what you’re using and clean with purpose.

All the resources, ingredients and tools you need are here on the website!

  • The Recipe Hub

    WHAT TO MAKE
    Step-by-step recipes organised around the supermarket products you already know. Find the product, make the swap.

    See what you can replace 

  • The Learning Hub

    WHY IT WORKS
    Plain-language deep dives into each
    ingredient: what it is, where it comes from, and why it earns its place under your sink.

    Meet the ingredients