Packaged in a clear sheath showcasing the sleek, brushed aluminum exterior, the White Expression features mint flavored, triple-action gel offering outstanding results on-the-go with convenience and style. The proprietary gel blend is a 6% stabilized hydrogen peroxide supported by a unique blend of hydrators and accelerators to provide outstanding results with optimal comfort. The clear gel also gives the teeth a quick shine for the brightest smile. The White Expression is easy to use anywhere, anytime. A twist of the pen base pushes gel up to the brush tip used to evenly apply the gel to the surface of the teeth. The pen includes 4.5 ml of gel for up to 60+ applications with visible results in just the first week when applying 2-4 times per day for maximum results. It's as easy as 1-2-3. Click it, apply it, and smile!