Clean with toothpaste. Toothpaste can remove stains on the surface of refrigerator, and it also has the special ability to remove the traces of ballpoint pen on clothes. Just soak the clothes in cold water for a while, then spread a layer of toothpaste evenly on the stained place, then rub some soap, and then gently rub the clothes, and the stains will gradually disappear.
Milk boiled milk can also be used to remove stains, as long as a clean towel is placed under the clothes stained with ballpoint pen stains, then a little boiled milk is dipped in clean cotton, and the stains are repeatedly wiped at the places stained with ballpoint pen until the stains completely disappear.
Prepare a bottle of industrial alcohol and a small bowl, pour the alcohol into the bowl, and then soak the ink-stained part in the alcohol for rinsing. If there is still a lot of ink that can't be dissolved, you can replace it with clean alcohol and rinse it again. Only a faint blue color is left, which is easy to wash off with soap.
Extended content: ballpoint pen ink and ballpoint pen form a ballpoint pen, and the ink consumption per unit area is 0.64 ~ 1.6 mg/cm2, so as to avoid stains and broken lines and make the ink transferred to paper easy to dry.
References:
Ballpoint pen ink-Baidu Encyclopedia