Rapid and long lasting desensitising agent, that requires no mixing, no curing and no repetitive steps. Indications include the treating of cervical hypersensitivity, as pretreatment to priming and bonding in direct composite restorations, as pretreatment prior to placing compomer or amalgam restorations or use after crown and bridge preparation, and for use prior to crown and bridge cementation or bonding. Long term efficacy