Speaking to Daily Mail, Sara said the simple powder had become a staple for her team because it delivers professional-level results without the risks that come with stronger chemical cleaners.

‘I’m all about keeping cleaning simple,’ she said.

‘I wanted to showcase this product because it’s non-toxic and perfectly safe for people with respiratory sensitivities and ailments, while also being extremely cost-effective.’

According to Sara, citric acid works by breaking down hard water, mineral and calcium deposits – the stubborn build-up responsible for cloudy glass, streaky tiles and dull shower screens.

‘The bonus is that it breaks down even the thickest and hardest build-up so easily,’ she said.

‘It reduces the need for manual scrubbing because the citric acid does the work for us.’

She said the results are often visible within minutes, leaving shower glass crystal clear and tiles noticeably cleaner, without the need for scrapers, razor blades, or strong-smelling sprays.

‘There’s no limescale, no scum, no calcium deposits left behind – it removes it,’ Sara said.

‘And it’s septic-tank safe, non-toxic, and easy to buy from your local supermarket.’

To use it, Sara recommends mixing two tablespoons of citric acid into a 500ml spray bottle filled with water, shaking until the crystals dissolve completely.

The solution can then be sprayed generously across shower screens, walls, floors and fittings.

‘Let it sit for three to five minutes so the chemical reaction can break down the build-up,’ she explained.

‘Then lightly agitate with a non-scratch sponge and rinse thoroughly with water.’

One crucial final step is drying the area properly.

‘The biggest part of this process is making sure you squeegee everything dry at the end,’ Sara said, which helps prevent the deposits from coming straight back.

She did caution that there is one situation where citric acid – or any cleaner – won’t work.

‘If you have permanent water etching, sometimes called glass cancer, no product can fix that,’ she said.

‘All you can do at that point is apply a glass treatment to slow down the deterioration.’

Her video has been viewed than 420,000 times, with many confirming Sara’s cleaning method worked wonders for removing stubborn shower build-up.

‘OMG… it worked,’ one said.

‘I used this on my shower screen and shower today and the result is amazing! Thanks for your tips,’ another revealed.

Many said they were keen to give her cleaning trick a go after struggling with other failed methods.

‘OMG YOU ARE A LEGEND. We have been dealing with this for ages,’ one said.

‘Ok, wow I need to do this! Looks amazing and easy,’ another shared.

‘Babe you’ve just saved my life thank you so much,’ one added.

Beyond the bathroom, citric acid is a quiet all-rounder.

It can be used to descale kettles and coffee machines, refresh washing machines and dishwashers, and even remove rust stains from sinks and taps – all without harsh fumes.

It’s also commonly used to lift soap scum from basins, break down mineral build-up on chrome fixtures, and help brighten cloudy glassware, making it a versatile staple well beyond shower screens.

Some households even use citric acid as a gentler alternative to vinegar for deodorising drains or loosening scale in toilet bowls, particularly where strong smells can trigger asthma or sensitivities.

With Australians increasingly seeking low-toxicity, budget-friendly alternatives to traditional cleaners, citric acid is quickly earning cult status – proving that sometimes the most effective solutions aren’t found in the cleaning aisle at all, but right next to the flour and sugar.