Specifications:●Item Type: Healthy Tooth Whitening Tooth Powder●Content:100g●Shelf life: 3 years●Storage method: Store in a cool dry placeFeatures:   1. Advanced Whitening Effect This nicotinamide tooth powder breaks down stubborn stains from coffee, tea, and tobacco, revealing a brilliant white smile while preventing future discoloration.   2. Antibacterial & Cavity Protection With antibacterial properties, it eliminates oral bacteria that cause bad breath and tooth decay, forming a protective barrier against cavities for stronger teeth.   3. Gum Health Enhancement Nicotinamide nourishes gums, reducing inflammation and improving firmness to combat gingivitis and prevent gum recession.   4. Long - lasting Fresh Breath It neutralizes oral odors at the source, providing all - day fresh breath while maintaining a balanced oral environment.   5. Trusted by Domestic Users Though our nicotinamide whitening tooth powder comes at a premium, it has won over many domestic users—they praise how it delivers visible whitening and comprehensive oral care in one formula.   How to use:   1. Rinse your mouth with clean water to wet your teeth. 2. Put an appropriate amount of tooth powder on a wet toothbrush and brush your teeth for 2 - 3 minutes. 3. Rinse your mouth with clean water until it is clean.