Use the product only as directed and for its intended use. For use only on natural teeth. Not suitable for children under 14 years. Do not use if allergic to any ingredients. If irritation, swelling or sensitive teeth symptoms develop, stop use of product and consult a dental professional or doctor. For external oral use only. If a significant amount is swallowed, please call a doctor. More than 4 applications per day is not recommended. May stain or discolour fabric.