Remove the red ink trace: Add 25% alcohol to the detergent, rinse it with clean water, then scrub it with 6.25% potassium permanganate, and then wash it with clean water. The new blue ink stains can be scrubbed immediately in cold water, soaked for another 4 to 5 hours, and finally scrubbed with soap. The aging can be washed in a warm detergent solution with a small amount of ammonia (about 2%) or borax. You can also wash the clothes first, then rub them with hot oxalic acid solution. After the blue color disappears, then wash the oxalic acid with clean water. Wash the red ink stains first with detergent, then wash with 10% alcohol and clean water. It can also be washed away with O.25% potassium permanganate solution.
Remove ink stains: It is best to wash while the ink is not dry and wash it with warm soapy water. You can also wash it with clean water first, then knead it with detergent and rice grains, and then stick it little by little with gauze or degreased cotton. The residue can be washed with ammonia water, or toothpaste or soap.
The main ingredients of ink are bone glue and carbon black. Generally, ink contaminates fabrics, they are attached to the surface of the fabric and are easily soluble in water, so water starch slurry can be used to remove stains. First, apply the appropriate amount of glutinous rice or white rice to the contaminated area of the fabric, and repeatedly rub it gently, and use even force, so that the starch sticky substance in the rice will bring out the carbon black that penetrates into the fabric fibers. After this treatment, wash the clothes with detergent liquid. Finally rinse it with clean water.
Remove new ink stains: first wash with warm washing liquid, then apply rice grains to the dirt and rub it gently.
Remove ink stains: First wash with warm washing liquid, then apply the paste made of alcohol, soap and toothpaste on the dirt. You can also remove it by rubbing your hands repeatedly.
Remove the oil stains of ballpoint pen: Soak the stains in cold water, wipe them gently with carbon tetrachloride, and then wash them with detergent and clean water. Can't wash with gasoline. You can also apply some toothpaste or a small amount of soap and gently rub it. If there are any traces, you can remove it with alcohol.
Remove blue ink stains: Wash with washing powder first, then wash with 10% alcohol solution. You can also rub a small amount of thick milk and then wash it.
Remove pen stains: Buy a little oxalic acid (granular) from a chemical store, soak and rub the clothes stained with pen stains in water dissolved with oxalic acid to remove traces. Because oxalic acid is a weak acid, it will not corrode clothing.