Simplesmile® Expert Pen offers a smooth and easy way to maintain teeth whiteness. It’s easy to bring with you, is gentle on teeth and gums and can be applied as often as you like. Using the Touch-Up Pen, you brush the bleaching gel evenly over the tooth surface to effectively improve the result of the teeth whitening, or if you simply want to increase the whitening effect on one or more individual teeth. The teeth whitening gel in Expert Pen contains several active ingredients, including PAP, sodium bicarbonate and coconut sulfate that work together to effectively clean and whiten teeth. The package contains 1 x Expert Pen (2 ml) which is enough for approx. 25 treatments, shade guide and instructions for use.