Optimum T.A.R. Remover is a fast acting, easy to use, and environmentally friendly solution for removing tar, adhesive, and rubber contaminants from all automotive surfaces. Optimum T.A.R. Remover is based on soy and other natural extracts and does not contain any petroleum distillates making it safe for the consumer, the environment, and your vehicles and is safe to use on all automotive surfaces including paint, chrome, plastic, and glass. Optimum T.A.R. Remover is biodegradable and VOC free.