The teeth whitening pen contains probiotics, tea extract, and mint extract. It can quickly remove stains on the surface of teeth, reduce dental problems, keep breath fresh, and make your teeth look brand new in a short time. Its usage is very simple: rinse your mouth or brush your teeth before use, then take out this product and brush the brush head on your teeth 2 to 3 times, brushing every tooth. Persistent use can effectively whiten teeth, clean tooth stains, remove yellow teeth and smoke teeth, whiten and brighten teeth, and freshen breath. Product Name: Teeth Whitening Pen Product Ingredients: Probiotics, Tea Extract, Mint Extract Keywords: Remove yellow tooth stains, freshen breath Weight: 15g Product Specifications: 4ml Product Size: 12.5*1.3cm Note: Light reflection and different monitors may cause the color of the product in the picture to be slightly different from the actual product. Minor errors are allowed in measurement.