- Varnal is a cavity varnish used as an auxiliary in covering and protection for the pulp-dentin complex. - When varnal is applied there is solvent evaporation in a thin resin film that remains on the surface of the cavity prepared. - Such thin film acts as a semi-permeable membrane, obstructing the passage of some ions. - It is most important to obtain a uniform and continuous covering on the whole surface of the cavity prepared. **For further product information, please contact Chat Support**