1. Wash the stain with clear water, so that the impact of water can wash the stain away as much as possible;
2. Knead the laundry detergent and rice into a paste, pre-coat it on the surface of the stain, and gently rub it repeatedly to rinse the washed stain;
3. Wash regularly with laundry detergent.
Note: It is difficult to completely remove ink stains in calligraphy. Repeating the above operations can reduce stains.
If it is pen ink, you can try the following methods:
1. Rinse the stain with clean water to dilute the stain as much as possible;
2. Apply the stock solution of laundry detergent to the stain, completely cover the stain, let it stand for 5 minutes (gently scrub), and add laundry detergent for routine washing;
3. If the above methods can't remove the stains, pour a small amount of water (about 0.5 liter) into the basin, measure the bottle caps of the colored stained clothes 1.5 and the collar net 60g with the bottle caps of the blue moon colored stained clothes (upgraded version of blue moon colored bleaching), add them into the water, and stir them evenly. Soak in the pencil box overnight, and then rinse it off.
The amount of water should make the clothes just wet, and the net content of colored clothes and collars should increase or decrease according to the amount of water. If there are still stains after soaking for one night, the soaking time can be continued to be extended.