Zero Nano Hydroxyapatite Toothpaste uses nano hydroxyapatite to naturally remineralize and enamel, filling tiny cracks and strengthening teeth. Safe for adults and kids, it helps prevent cavities and is from fluoride, harsh chemicals, and artificial additives for a gentle yet powerful clean. Natural Teeth Whitening Formula brightens your smile without peroxide or bleach. It gently removes surface stains and polishes teeth to reveal a whiter, healthier appearance. The mild abrasion protects enamel, making it suitable for daily use by the whole family. Cavity Prevention and Protection provides a safe alternative to fluoride. Hydroxyapatite bonds to tooth structure to create a protective barrier against acid erosion and decay. It is suitable for sensitive teeth, reduces plaque buildup, and supports longterm oral health. Enamel for Stronger Teeth restores weak or damaged enamel with a scientifically backed formula. Nano hydroxyapatite mimics natural tooth minerals to rebuild enamel from within. This helps reduce sensitivity, prevent future damage, and maintain a resilient, healthy smile over time. Use scenarios: Daily family brushing for whitening and cavity prevention, suitable for adults and kids. Gentle care for sensitive teeth and for those seeking a fluoride option. Enamel protection after meals or consumption of acidic foods and drinks to support longterm enamel integrity. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.