One Coat Self-Etching Bond is a 6th generation, two component, light-cured, self-etching adhesive. Formulated to provide an easy technique, One Coat Self-Etching Bond eliminates the need for an extra etching Step. The Primer 1 solubilizes the smear layer, without totally removing it as total etch bonds do. The Bond 2 penetrates through the smear layer into the tubules to create the so called resin tags, which are responsible for its outstanding retention.