And what’s more is that it’s impossible to remove it, ensuring you end up chucking it in the bin and forking out to get a new white top instead.
But one laundry expert has revealed the simple way to remove these pesky stains in a bid to save you some cash.
Taking to his social media account, he told viewers: “Did you know that sun cream stains are actually rust stains?”
Rubbing some sun cream onto a white cloth, he continued: “When the metals and minerals in sunscreen come in contact with sweat and water, they rust and turn yellow as you can see here.”
He explained that as a result of this reaction, you need to use a rust remover to treat the problem.
TikTok user @jeeves_ny said that dry cleaners tend to use a product called RustGo, which uses hydrofluoric acid, but “that’s overkill”.
“Carbona’s rust remover works just fine,” he went on, adding that it uses oxalic acid and citric acid.
Applying the product onto the stain, he said you should wait at least 15 minutes before washing it out.
“Inspect before drying and if any colour remains, hit it with an oxygen bleach like hydrogen peroxide and let it air dry,” he shared. “And let it air dry”.
He ended the video by adding: “I hope this guide to removing sun cream stains makes your summer a little bit easier. Happy cleaning.”
People flocked to the comments section to share their thoughts on his clip as one person wrote: “Does anyone know an alternative to buy in the UK????” to which one person replied: “The Dr Beckmann stain spray works perfectly for me! I get it off Amazon UK for like £5”.
Another shared: “Do you KNOW HOW MANY WHITE THINGS IVE HAD TO GET RID OF BC OF SUN CREAM STAINS?! IT WAS RUST ALL ALONG?!” followed by a crying with laughter emoji.
A third posted: “The solution I’ve been wanting for two years. Thank youuuuuu”.
While a fourth added: “THANK YOU – I started wearing sunscreen every day this year and wear white shirts exclusively – you just saved them all”.