Effects:Clean Teeth Stain, Freshen Breath, Whiten Teeth,Strengthen Enamel, Repair Oral DamageHow to use:1.Squeeze proper amount of foam into your mouth, balloon your cheeks to make the foam flow over your oral cavity and gingiva;spit the foam out in 10- 15 seconds and you will feel that your mouth is refreshed instantly2.Squeeze proper amount of foam on your toothbrush.Gently brush your teeth and coated tongue for 2- 3 minutes forcleaning and refreshing