Skip to product information
1 of 1

Citric Acid

Citric Acid

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!

Regular price $11.50
Regular price Sale price $11.50
Save Sold Out

*Refills arrive in a home compostable Earth Bag. The jar comes full, buy it once and refill from then on.

Quantity

Limescale, soap scum, cloudy glass and stiff laundry are often mineral problems. Citric Acid dissolves the build-up instead of making you scrub harder, without the vinegar smell or another specialised cleaner.

What is it & does


Citric Acid is a naturally occurring organic acid found in citrus fruits and many other plants. The Citric Acid used today is generally produced through fermentation, creating the same citric acid molecule found naturally in lemons and limes.

In water it creates an acidic solution, generally around pH 2–3 depending on concentration.

While alkaline ingredients such as Washing Soda are excellent at tackling grease and organic grime, Citric Acid works on a completely different problem: minerals and alkaline residue.

It helps dissolve calcium carbonate behind limescale, binds calcium and magnesium from hard water and neutralises alkaline residues left after cleaning.

Think of it as the rinse and reset ingredient in your cleaning system.

Important Info

✅ 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.

View full details

A natural alternative to heavily formulated cleaners

Use one simple, fragrance-free ingredient to tackle mineral build-up instead of reaching for fragranced descalers, bathroom sprays and rinse products with long ingredient lists.

No vinegar smell required

Performs many of the same acidic cleaning jobs as vinegar without leaving your bathroom, laundry or kitchen smelling like it.
No vinegar smell required
Performs many of the same acidic cleaning jobs as vinegar without leaving your bathroom, laundry or kitchen smelling like it.

Spend less on products that are mostly water

A concentrated dry powder and you add the water yourself. A small amount can make an entire bottle of cleaning solution or perform a complete descaling job.
Spend less on products that are mostly water
A concentrated dry powder and you add the water yourself. A small amount can make an entire bottle of cleaning solution or perform a complete descaling job.

Let chemistry replace the scrubbing

Reacts with mineral deposits such as limescale, helping dissolve the build-up so you can rinse or wipe it away instead of relying on elbow grease alone.
Let chemistry replace the scrubbing
Reacts with mineral deposits such as limescale, helping dissolve the build-up so you can rinse or wipe it away instead of relying on elbow grease alone.

Less packaging coming into your home

Instead of repeatedly buying bottles of descaler, bathroom cleaner, rinse aid and fabric softener, one refillable ingredient can take on all of those jobs.
Less packaging coming into your home
Instead of repeatedly buying bottles of descaler, bathroom cleaner, rinse aid and fabric softener, one refillable ingredient can take on all of those jobs.
Jar of citric acid on a toilet as toilet cleaner
A bowl of white small bath bombs using Citric Acid and Bicarb Soda
A kettle with a spoon full of Citric Acid being poured in as a natural descaler
Citric Acid granules in a wooden bowl

Ways you'll use it...

Citric Acid can be used straight from the jar or dissolved into water, giving you one ingredient for laundry, bathroom, kitchen and dishwashing jobs.

Clean glass & windows

Use a diluted Citric Acid solution to help remove the mineral film and alkaline residue that can leave glass looking cloudy or streaky.
Clean glass & windows
Use a diluted Citric Acid solution to help remove the mineral film and alkaline residue that can leave glass looking cloudy or streaky.

Fabric softener

Add to the rinse cycle to help clear alkaline soap and detergent residue and hard-water minerals that can leave clean laundry feeling stiff.
Fabric softener
Add to the rinse cycle to help clear alkaline soap and detergent residue and hard-water minerals that can leave clean laundry feeling stiff.

Dishwasher rinse aid

Use its mineral-binding ability during the rinse to help reduce hard-water residue and cloudy deposits on glassware and dishes.
Dishwasher rinse aid
Use its mineral-binding ability during the rinse to help reduce hard-water residue and cloudy deposits on glassware and dishes.

Make bathroom spray

Dissolve a small amount in water for shower screens, taps, basins and suitable tiles where soap scum, limescale and mineral build-up are the problem.
Make bathroom spray
Dissolve a small amount in water for shower screens, taps, basins and suitable tiles where soap scum, limescale and mineral build-up are the problem.

Make toilet cleaning gel

Thicken a Citric Acid solution with Glycerine and Xanthan Gum so it clings under the rim and gives the acid time to dissolve mineral build-up.
Make toilet cleaning gel
Thicken a Citric Acid solution with Glycerine and Xanthan Gum so it clings under the rim and gives the acid time to dissolve mineral build-up.

Descale kettles & appliances

A small amount dissolved in water helps remove the calcium carbonate deposits that accumulate wherever hard water is repeatedly heated.
Descale kettles & appliances
A small amount dissolved in water helps remove the calcium carbonate deposits that accumulate wherever hard water is repeatedly heated.

Understand why this works

Learn why alkaline cleaners are brilliant at grease but struggle with mineral build-up, how Citric Acid actually dissolves limescale and binds hard-water minerals, and why using an acid as a separate final step can leave glass, laundry and surfaces cleaner than simply adding more product.

  • 5 stars: 16 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
D
Damien D. (Australia)
Under Your Sink

Ingredients were packaged perfectly and worked perfectly... sounds like a perfect business! Wishing them all the best.

G
Gillian H. (Australia)
Excellent Toilet Cleaner

Fast and effective at removing stains in the toilet.

S
Susi W. (Australia)
Ctric Acid

Hi there,
I have been using citric acid as a fabric softener for 8 years from under your sink. The research Analise puts into sourcing her products is stainable and ethical, and financially viable. I would recommend any product from under your sink.

A
Amy L.
Perfect

beautifully packaged,
Perfect for making dishwasher rinse aid, fabric softener and hair conditioner rinse

C
Chloe B.
Vegetable glycerin & citric acid

Has made my body was so lovely on the skin. Quick turn around time. Lovely service will be ordering again. Thank you

P
Pace S.
:100:

All of the products are amazing, Thank you so much Analisa, lovely lady :u1F970:

K
Kylie M.
Fantastic

Fantastic

K
Kylie M.
Works beautifully

Works beautifully

N
Nicole R.
Best product

I use this all the time. Especially as a replacement to fabric softner. So many more things!

M
Michelle B.
Arrived in perfect condition and just made my first soap!

These were exactly what I’d hoped for - excellent quality, everything feels really well made. And thank you for the extra little gift. So generous and kind!! xoxo

R
Rhiannon P.
:+1:

:+1:

M
Mary M.
Citric acid

This is a great product. I use it in the toilet and dishwasher. Leaves glasses sparkling

M
Mariah H.
Quality product

Love the biodegradable packaging
Great value for money very happy Thankyou!

N
Nicole B.
All rounder

I honestly never thought about making my own cleaners but since getting this I have made toilet cleaner and will be making fabric softener. I do need a few other ingredients to make dishwasher tablets but this is Definitely one staple that will always be in my house.

V
Veronica H.
Citric Acid

Citric acid leaves my laundry smelling fresh and clean. Ive never used it before as a fabric softner but it works well and even after my washing has dried it still smells fresh and fragrant. So much nicer than vinegar. :blush:

N
Normajeane
So pleased to have found "Under Your Sink"!!

I will definitely be purchasing more products from this company... :-)
I couldn't find citric acid being sold in environmentally friendly packaging anywhere else and the natural bleach powder works wonders on my dirty laundry... I can't wait for my other cleaning supplies to run out so I can try some more home made ones.

E
Elizabeth

Is the citric acid you sell food grade?

Under Your Sink

Hello and thanks for your question. Yes, our citric acid is food grade, pharmaceutical grade, and cosmetic grade. However, since we are not a food distributor and store it alongside other cleaning ingredients, we cannot guarantee it for food-grade purposes just to be safe. Hope this helps and thank you!