【Authentic Whitening Care at Home】Your teeth color greatly impacts your appearance! Achieve a youthful and clean, favorable impression with the quasi-drug DiaCrysta! 【Bad Breath Prevention × Cavity Prevention × Periodontitis Prevention】Luxuriously formulated with three effective ingredients approved by the Ministry of Health, Labour and Welfare, thoroughly addressing oral problems. (Dipotassium Glycyrrhizate, Polyethylene Glycol 400, Isopropylmethylphenol) 【7 Effects and Efficacies of Quasi-Drugs】DiaCrysta is recognized as a quasi-drug with the following effects and efficacies: whitening teeth, preventing bad breath, preventing the occurrence and progression of cavities, refreshing the mouth, purifying the mouth, preventing periodontitis (pyorrhea), and preventing gingivitis. 【4 Naturally Derived Support Ingredients】Carefully selected and formulated with four natural support ingredients to address oral problems. Supports the health of your mouth and gums. (Tea Extract, Seaweed Extract, Rosemary Extract, Sage Leaf Extract) 【OK for Electric Toothbrushes】Since it does not contain abrasives and does not damage teeth, it can be used with electric toothbrushes. Finished with a gentle botanical mint flavor for a refreshing and clean feel.