The Whiter Image ToGo Teeth Whitening Pen offers a stylish, premium quality solution to a brighter, whiter smile in a convenient, brush-on delivery system. Use it anywhere, anytime! It includes 4.5ml of premium stabilized hydrogen peroxide teeth whitening gel offering 60+ applications. The Whiter Image ToGo Pen can be used as a stand alone teeth whitening program or as a maintenance solution after chair-side whitening. It is easy to use and portable to share a smile everywhere! It can also be used to help maintain your bright smile after consuming dark liquids or foods.