Cleaning can be carried out by the following methods:

1, if the pen doesn't print for a long time, you can rinse it with water first, then soak it in warm soap for a few minutes, and then rinse it with water after removing color stains.

2. If the pen mark is polluted for a long time, it can be washed with water first, and then wiped off with 10% alcohol water solution; Then, the fabric is cleaned by conventional methods. Note: alcohol is flammable, so pay attention to fire prevention when using it.

3. If there are still a few marks after cleaning by the above method, 84 drops of 1-2 can be placed in the place with marks, and 84 drops can be washed off with washing powder after a few minutes to restore the original color of the fabric. Note: the concentration of 84 should not be too high, otherwise it will also destroy the texture of the fabric. Low concentration bleaching is recommended several times.