Natural Ingredients- This powerful stain-removing and colour corrector pen utilizes the powerful cleaning power of xylitol, the most effective natural stain remover. Rightens teeth by utilizing color correcting technology. Reduce yellow stains, and make your teeth no longer yellow. Fresh breath and bad breath, care for whiter teeth. Unique Active- Our Professional Teeth Care Serum contains unique actives that deeply whiten teeth, prevent the re-formation of stains, and maintain the correctoring effect for a long time. Long-term use of this product shalls help to keep periodontal problems away. Easy Remove Years of Stains- Our professional teeth colour corrector pen contains correctoring ingredients that can effectively and quickly remove years of tooth stains caused by coffee, tea, alcohol, smoking, soda, etc. And make your teeth bright and clean. Easy to Use and Store- This teeth colour corrector is very easy to whiten teeth, and the steps are simple: brush tooth, twist pen, leave gel onto teeth, rinse mouth. Its easy to store in a cool, dry place, away from direct sunlight.