For clinicians who prefer a creamier gel that readily settles into dentin and enamel, but does not run, Etch-Royale™ 37% Phosphoric Acid Etching Gel is the perfect choice. The darker blue color is easy to see in thin applications. Etch-Royale has all the same features as Etch-Rite, but the consistency is slightly creamier than its famous sister product.