This is a pet tooth whitening pen kit-2 pens-white pen- can penetrate into the gums, remove tartar and stubborn dental stains on the teeth, soften the teeth on the calculus, make the calculus lose and fall off and blue pen-dental care formula, all-round care of oral and gums, anti-inflammatory and bacteriostasis, repair gums, strong teeth, so that teeth more bright and white luster, contains natural plant fresh oral formula, so that the mouth is fresh and natural.