You can use whatever vessel you have at your disposal to mix the soap and water. However, using an empty spray bottle works perfectly. This will allow you to shake the soap and water until it’s fully mixed, and then spray directly onto the stain.

Make sure that you apply enough of the soapy water solution so that the stain is completely saturated. Continue dabbing until you no longer see the stain. It should fade as you continue to blot. Keep going until it is gone (or acceptable to you).

Vacuum over the area after it’s dry to “re-fluff” the area and make sure it is blended into the rest of the carpet.

Many carpet cleaners list on their labels which types of stains they work best on. Look for a bottle that lists cosmetics. The faster you can treat a stain, the better chance you have of removing it completely. Keep the bottle on hand after you work on the eyeliner stain so that you can be prepared for any future mishaps.

Vacuum over the area after it’s dry. This will help to blend the treated spot back into the rest of the carpet.

Do this in a well-ventilated area, because ammonia can have a pretty strong odor. Don’t worry, it won’t smell after it dries.

Ammonia is not safe for pets. Make sure that you keep pets away from the area you are cleaning with the ammonia solution.