With SmileActives’ Power Whitening Pen, you can get whiter, healthier teeth without visiting the dentists! With 40% more active ingredients that SmileActives’ Original Whitening Pen, all you need to do is simply brush the pen on your teeth and let it dry. This safe, alcohol-free, preservative-free, paraben-free, detergent-free, artificial coloring-free, and sodium-lauryl-sulfate-free water-based gel will last up to three weeks, and is easy to use. Whiten your teeth and freshen your breath without increasing teeth sensitivity with this convenient pen. Comes in five flavors!