All you need are some simple household items and this tutorial fromClever Hackson YouTube.
Thanks toClever Hacksfor this amazing tutorial.
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Image credits: Clever Hacks via YouTube
Mix everything together until combined.
Once done, prepare a bottle with a sprayer and transfer the mixture onto it through a funnel.
After 30 minutes, place the pillow in a bucket and leave it for another hour.
Once done, let your pillow dry and the yellow stains are now gone.