A seemingly clever hack for quickly de-icing a car windshield without having to scrape or use a spray of chemicals has divided people on TikTok.

In the clip, uploaded by user @kimbutt26, she pours hot water from a kettle into a plastic "bag for life" and takes it out to the car, which is covered in a hard frost.

She then quickly slides the bag over the windscreen, with the ice melting away in an instant.

The video has been watched just under 2 million times on the video-sharing app, with many people promising to use the hack the next time they're battling a frosty car.

The de-icing hack went viral on TikTok
The de-icing hack went viral on TikTok

One amazed viewer commented: "You're telling me in school I'd be waiting for my mum to bring six kettles full of water so she could drop me at school when she could have done this?"

Someone else said: "I always do this, so easy."

"That's next level," gushed another fan.

Some car owners were more skeptical and said the nifty-looking trick might damage the windscreen, or even cause it to crack, by heating it up too quickly.

A woman scrapes the windscreen to remove frost from her car

One person commented: "Do not do this with boiling water, lukewarm at a push."

"That’s also a great way to crack your screen, not so clever," blasted another.

According to the AA, roughly 2% of people use boiling water to defrost the ice on their car and the risk of cracking the windscreen is real.

It can also melt the ice very quickly, only for the water to re-freeze and stick the windscreen wipers to the glass.

Warning against the hot water method on its website, the organisation says: "Glass expands quickly when hot or even warm water touches it.

"But it'll contract quickly too as it cools down in the cold air.

"That flexing can make the glass crack even if you're using lukewarm water – especially if it had small chips or cracks already."

The AA claimed the best way to remove ice was with a traditional scraper.