This brush color removal tool is a must have for me when I travel 🙌🏾😍. It’s a sponge that helps you clean the excess eyeshadow off of your brush, so that you can switch to another color. I got mine on Amazon. This isn’t something that you would use in place of washing your make up brushes on a regular basis (for cleanliness / hygiene purposes), but it does help to get excess eyeshadow off so you can use that same brush for another color. LTKBeauty LTKVideo