1 First of all, it depends on what material the clothes are made of. The general practice is to put a towel under the stain and gently brush it with a small bristle brush dipped in alcohol. After the stain dissolves and spreads, soak the pants in cold water and gently brush them with soap. Repeat this for two or three times, and you can basically remove the pen oil.

2. If a small amount of residue remains after washing, it can be removed by soaking in hot soapy water or boiling. This method can be used for cotton and cotton polyester fabrics.

3. If the wool is stained with pen oil, first soak the stain in the mixed solution of trichloroethylene and alcohol (the ratio is 2: 3) 10 minute. At the same time, brush gently with a brush. After most of the oil stains are dissolved, clean them with low-temperature soapy water or neutral washing powder.