Actino is a blue-tinted viscous liquid of 37% Phosphoric acid, silica-free composition recommended for use on enamel and dentine, and its non-drying thixotropic liquid composition prevents thickening and drying out with time and thus maintains its flow characteristics. Indications: - For the conditioning of both dental enamel and dentine surfaces before placing adhesive restoration. Product Benefits: - 37% phosphoric acid to give the best dentine etching results. - Provides controlled depth of dental etch. - Does not dry etched tooth surface.