Many of us have learned the hard way that permanent marker does not come off easily, whether the lesson has come via a treasured item of clothing or your best pal's face at a house party.
Which is why this woman has left people astonished at her uncanny ability to remove a nasty looking stain from a white jumper - without using any cleaning product.
The wonder woman originally posted on the Facebook group Mums Who Clean to seek help with the permanent marker stain on a Champion hoodie.
One commenter told her to soak it in eucalyptus oil for half an hour, and she did just that. To her amazement, the smart hack worked, removing '90 percent' of the stain.
Sharing incredible before and after pics, she wrote: "It worked so well! I rinsed the stain with water and squeezed the extra out as much as I could so the colour didn't run."
Eucalyptus oil is an essential oil that is used as a medicine to treat a variety of common diseases and conditions - including nasal congestion, asthma and as a tick repellant.
Judging by the incredible job it did of removing the woman's stain, you can add natural detergent to the list too.
Just to ensure the hoodie looked as good as new, the woman finished off the remaining ten percent by pouring bleach on the area and running it through the washing machine.
As shown in the images, the oil did just the trick - the clothing item looks box fresh.
And now her post has racked up hundreds of likes and dozens of comments from people amazed by how well her stain removal job worked.
One commenter wrote: "I wouldn't have thought you could get that stain out. Great work!"
Another added: "Oh my gosh! I saw this post last night and even showed my husband and told him that I didn't think it would ever come out. I'm off to show him this."
Now you know how to get the stains out of your clothes, I'll bet you're wondering if the same can be done for your trainers too.
As outlined by Reebok in a handy video, to get your shoes clean, you'll need the following: a razor, a toothbrush, baking soda, water, nail polish remover, hydrogen peroxide and a bit of washing up liquid.
To make the magic potion that will bring your trainers back to life, firstly, pour some water and five tablespoons of baking soda into a bowl. Give it a nice stir together with the toothbrush.
Then, squeeze one to two tablespoons of washing up liquid into the mixture, and again, give it a good old stir.
Lastly, put one to two tablespoons of hydrogen peroxide (the stuff people bleach their hair with) into the bowl. Give it all a mix together and you're good to go!