Designed to be used with our Professional Whitening System to maximize teeth whitening results. Professional Activating Rods simulate the first step in the Smigel technique for in-office whitening. The activating serum gently and safely prepares the tooth enamel’s surface to jump-start the whitening process. Free of silica, parabens, sulfates, known allergens, animal by-products and BPA. It’s also Kosher.