Jie Yin Toothpaste is clinically proven to be effective against mouth ulcers, inflammation, gum bleeding and general mouth pain. It is also ideally suited for people with dental caps whose gums may have weakened and receded. This condition often causes the gums to bleed when brushing vigorously. Jie Yin was developed with China’s No. 1 Military Medical College from selective Chinese medicinal herbs. It’s been the leading selling toothpaste in China for the last 15 years.