Getting to highlighter stains as soon as possible is important, but because of our busy schedule that is not always possible. Getting rid of highlighter stains can be tough but not impossible. It is very important to identify what type of material you are dealing with so that there is no damage to your carpet. If you do not feel very confident in removing these types of stains on your own, it is always best to call a professional. Here I have a couple methods you can use to try and remove any highlighter stains from your carpet.
First, begin by adding water into a bucket and mixing 1 table spoon of white vinegar and 1 table spoon of detergent. Next, use a white cloth; dip into the bucket and then lightly press against the affected area until most of the stain is gone. Always test in an inconspicuous area first to avoid any damage to your carpet. Then, using a new cloth and cold water, rinse the area. If the stain is still visible use a new white cloth and a little bit of rubbing alcohol and gently pat the affected area only. It is very important that you do not get alcohol anywhere on the carpet but the stain. Allow the area to dry and then rinse with cold water. After you have rinsed the area use another white rag and blot dry. If the stain is still visible mix 2 cups of water, 1 table spoon of ammonia, and 1 table spoon of detergent. Apply the solution to the stain and allow 30 min dwelling time, adding more of the solution every 5 minutes. Lastly, rinse the area with cold water, and using a new white cloth blot dry.
This second method is very simple. First, begin by identifying the color of the stain to know if you will be using a solvent or an oxidizer. If the stain is yellow or green apply a reducer only and gently agitate. If the stain is blue or red apply an oxidizer and gently agitate. The stain should disappear in about 15 minutes.