There are a few ways that you can remove paint from your child's face, but the most common and effective way is to use warm water and soap. Simply wet a washcloth with warm water and add a small amount of gentle soap to it. Gently rub the washcloth over the paint on your child's face in circular motions until the paint begins to lift away from their skin. You may need to rinse the washcloth a few times during this process. Once all of the paint is removed, be sure to rinse your child's face with clean water to remove any residual soap.