CRC De-Icer instantly dissolves ice, snow or frost. Simply spray at the top of the windscreen and CRC De-Icer will dissolve into the build-up. The non-smear formula actively fights re-freeze and keeps windscreens crystal clear. CRC De-Icer is harmless to glass, rubber, plastics, vinyls and all automotive finishes. Ideal for use on automotive windscreens, to relieve internal fogging of windscreens and to release frozen door locks.