1. Red ink stains: New stains should be washed with cold water first, then soaked in warm soapy liquid for a while, and then rinsed with clean water; old stains can be washed with detergent first, and then rubbed with 10% alcohol solution It can be removed by rubbing.
2. Ink stains: You can mix rice grains and detergent thoroughly, apply it on the stained part and rub it, and then rinse it with clean water; you can also use a solution made of one part alcohol and two parts soap to rub repeatedly, and there are also Good results.
3. Ballpoint pen oil stains: First of all, you need to check what material the clothes are made of. The general method is to put a towel under the stain, use a small bristle brush dipped in alcohol and gently scrub it along the thread until the stain is dissolved and diffused. Then soak the clothes in cold water, apply soap and scrub gently. Repeat this two or three times to basically remove the ballpoint pen oil. If there is still a small amount of residue left after washing, it can be removed by soaking in hot soapy water or boiling it. This method can be used for cotton and cotton-polyester fabrics. If the woolen bag is stained with ballpoint pen oil, you can first soak the stained area in a mixed solution of trichlorethylene and alcohol (the ratio is two to three) for 10 minutes. At the same time, brush it lightly with a brush until most of the oil stains are removed. After dissolving, wash with low-temperature soapy water or neutral laundry detergent.