A felt-tip pen is a problem for parents of small children, a frequent cause of stains on furniture and more. Inside the felt-tip pen are conventional “inks”, usually an alcohol solution of a dye.

This dye firmly clings to the fibers, together with alcohol penetrates into the smallest pores and gives a fairly stable color. Of course, there are exceptions.

Stains from felt-tip pens and markers can be removed well by dissolving and washing off these inks. And in the most difficult cases, the remaining dyes have to be bleached.

Means to remove stains from felt-tip pens, markers