Jade Blue Etchant Gel, Uni-Syringe Kit: 1 x 12g Syringe & 20 Pre-Bent 23ga Blue Applicator Tips. 37% thixotropic phosphoric, non-slump acid gel for enamel and dentin. Washes off completely and easily and does not stain. Has a dark blue color that allows high visibility for precise selective placement. Creates micropores in the enamel surface and removes the smear layer to unblock dentinal tubules. Gluten-Free.