Meguiar's Ultimate All Wheel Cleaner provides a powerful clean that is safe for all wheel finishes. This advanced chemical mixes with road grime attacking surfactants with active brake dust dissolving agents. The deep-cleaning gel formula will turn brake dust purple and road grime brown as it gently loosens stubborn impurities, making it easier for them to be removed. With its acid-free and pH balanced formula, this wheel cleaner is effective, and most importantly safe, for all wheel finishes and painted brake parts.