There are different types of ink on the pencil case, and each type requires a specific cleaning method. It is crucial to understand that different inks necessitate distinct cleaning techniques.
Pen
There's an all-too-common problem that plagues many of us when we're out and about - a pen stain on our clothing. Fortunately, it's usually a pretty easy fix. All you have to do is soak the affected area in some detergent, and the stain should come out with ease.
ball pen
One of the most challenging stains to remove is ballpoint pen ink. This type of stain is organic, which means that it will not dissolve in water. Additionally, due to its high molecular weight, it has a strong affinity to surfaces, making it difficult to remove using washing powder or detergent. If you have a car, try using gasoline to wash the stain and then rinse it thoroughly. Alternatively, soak the stained fabric in 84 disinfectant for a while before washing it by hand, but note that this is a slow and tiring process. Another effective solution is to use oxalic acid during the wash, which can produce excellent results.
Ink
In case of ink stains, fret not, as there are numerous methods to remove them. Firstly, rinse the affected area with cold water to remove excess ink. Then, create a mixture of rice granules and detergent solution and apply it onto the stain. Rub the mixture into the area repeatedly. After that, make a solution by combining one part alcohol and two parts soap and rub the stain again. Another trick is to use either glutinous rice or toothpaste, and scrub the ink extensively. Alternatively, you can apply a four percent solution of sodium bicarbonate onto the affected area and brush it. Lastly, you may also try to mix almond pinellia and eggs and spread the mixture on the stain, scrubbing it for around three to five minutes.
Red ink
To remove new traces, first dip them in red ink and then rinse them with warm water mixed with detergent. After that, use 10% alcohol to thoroughly scrub the traces. It's important to wash the traces with detergent first before scrubbing with alcohol. Overall, this process will effectively remove any new marks or traces.
Blue ink
When dealing with stains that are stained with blue ink, it is recommended to initially scrub the new stains using a general detergent. For more stubborn traces, soaking them in a 2% oxalic acid solution for a few minutes and then scrubbing can be effective.

