Instantly deposits Rain-X treatment every time you use your windshield washer fluid. Compatible with all windshield washer fluids. Provides outstanding cleaning and leaves a water and soil repellent finish that reduces wiper chatter, streaking, and smearing. Rejuvenates and extends Rain-X performance. Professional strength cleaning compound. Removes tar, bug residue, wax, oil and mineral deposits. Can be used on glass and chrome.