Finish your work in flying colors! Complete, spot-on color control for your repairs and restorations. MasterTint additives make color matching fast and easy. Formulated to work with all GluBoost products. B3GluDry Accelerator must be used along with ALL MasterTint products. MasterTint is ULTRA CONCENTRATED. Using too much MasterTint or too little Fill n' Finish or MasterGlu can result in clumping or a non-drying mixture.