1. When removing the stains, please wipe gently so as not to damage the gums and oral mucosa;
2. Properly wet the cotton swab when it is soaked, making sure it is not too wet;
3. It takes about 1 min to wipe each tooth;
4. If the stains can't be removed completely, please use again after a week;
1.While using the product, avoid direct contact with the gums, oral mucosa and mouth. Otherwise, gum swelling and pain
2.Soak the cotton-wool bud in the liniment to modest degree.
3. Wipe each tooth for about 1 minute.