Product Feature:

• Containing high concentration cleansing ingredient silica. It could whiten teeth, remove yellowing pigment and prevent tartar once a week effectively.
  How to use :
• Use pearl-sized amount and brush as usual.
• Rinse thoroughly by water after brushing.It is especially
  recommended to use to remove staining.Use once a week
  is recommended for effective removal of staining.
  Caution:
• Stop use and consult a doctor if any adverse
  reaction occurs.If accidentally contact with the eyes,
  please wash with water thoroughly.Wash the toothbrush
  thoroughly after use.

*Photo for reference only.