Bleaching a sweatshirt is quick and easy. You can update an old sweatshirt, or a plain new one, with a cool splatter look. Like reverse tie-dye, this process with bleach removes the color from the shirt to make a cool, cozy look to wear in cold weather.
Lay the black sweatshirt out flat on the ground, outside, with the sleeves fully extended.
Fill the empty water bottle, with a large-ish hold poked through the lid, with some bleach.
Shake the bottle over the sweatshirt wherever you want the bleach to be.
Shake the bleach on the front side of the sweatshirt and then flip it over to do the backside.
Let the bleach sit to “develop” for about half an hour.
Wash your DIY bleach sweatshirt in the washer and dryer, as normal.
Optional, cut out the neck of the sweatshirt (use really sharp scissors and cut just outside the seem of the neck seam).
Notes
Be sure to protect the ground where your sweatshirt will lay as it bleaches.If you want to ensure that you don't get bleach on certain parts of the sweatshirt, make sure to cover it with plastic bags or a trash bag. If you don't leave it on long enough, the bleached areas will look orange. Leave it on as long as possible to make it turn more white.