Toothpaste stains can be tricky to remove without washing the shirt, but here's a simple method you can try:
First, gently scrape off any excess toothpaste from the fabric using a spoon or a dull knife. Be careful not to spread the stain further.
Take a clean, damp cloth or sponge and blot the stained area. Avoid rubbing, as it may push the stain deeper into the fabric or spread it.
Mix a small amount of mild liquid dish soap with water to create a soapy solution.
Dab the soapy solution onto the toothpaste stain using a clean cloth or sponge. Gently work the solution into the fabric by blotting and lightly rubbing the stained area. Be cautious not to scrub vigorously, as it may damage the fabric.
Once you've treated the stain, use a clean, damp cloth to rinse the area and remove the soapy residue.
Blot the dampened area with a dry cloth or towel to absorb excess moisture. Let the shirt air dry completely.
Keep in mind that this method is not as effective as washing the shirt properly. If the toothpaste stain persists or if the fabric is delicate or requires special care, it's best to follow the manufacturer's instructions for washing the shirt or take it to a professional cleaner.