First, resist the urge to rub. Scrubbing a toothpaste stain is like trying to put out a grease fire with water—it makes everything worse. The abrasives will literally grind the stain deeper into your shirt.
Instead, grab a dull knife or the edge of a credit card. Gently scrape away the excess paste—the glob, not the smear. Think of it as archaeological excavation, but for your laundry.
This simple step removes about 80% of the problem before it even touches water. It’s a small move with a massive payoff, like deleting a bad text message before it sends.
Cold Water: Your First Rinse
Now, head to the sink. Turn the tap to cold water—not warm, not hot. Hot water can actually set protein-based stains, and while toothpaste isn’t a protein, cold water is the universal “maybe later” signal to any stain.
Hold the fabric under the running water, running it from the back of the stain (the inside of the shirt) through to the front. This pushes the toothpaste out instead of deeper in. You should see the white or blue color start to dilute and disappear.
If the stain is still there after a solid minute of rinsing, don’t panic. You’ve just entered phase two.
