One Cleansing Teeth Formula
120 grams of salt (calcined), 30 grams of apricot kernels (soaked in water to remove skin and tip). Grind into a paste. Use daily to rub teeth. This formula originates from *Taiping Shenghui Fang*, an early prototype of ancient toothpaste. Using it for brushing not only keeps teeth clean and white but also prevents dental caries. <Cleaning Teeth>