Our oral tooth cleaning pen contains panthenol, sodium PCA, and eucalyptus leaf extract. It can break down tooth melanin, reduce dental problems, and keep breath fresh. The usage method is very simple: apply it once in the morning and once in the evening every day, using a toothbrush to apply it, then wait for 5 to 10 minutes, and rinse your mouth with water. After using it, the stains on the teeth were removed, the teeth were cleaned, and the breath was refreshed.