You can quickly remove highlighter from carpet with the cheap trick of using peroxide instead of water.
-Removing Highlighters from carpet
-Reactions from other “highlighters”
“Highlighters” are a stain that you can create from the teacher’s grading. It is made up of a chemical called choline chloride and the ink remover, benzalkonium chloride. Highlighters often appear yellow and turns the top layer of fabric into the color of the highlighter liquid. “Oh my god, highlighters” is known to most college students who have gotten desperate looking for ways to remove these stains on furniture. Here they found a method that can help them get rid of their highlighter stains without purchasing any chemicals or setting fire to their couch.