Tooth stain eraser: \r\n✔Place tip of the stain eraser on stained tooth surface and polish gently, making sure to be extra gentle while polishing near the gum line.\r\n\r\nPlaque Remover: \r\n✔Place curved metal tip at the gum line between teeth and gently pull it away from the gum line to remove lodged food and plaque.\r\n✔Place curved metal tip flat against the tooth surface and as close to the gum line as possible. Draw the cleaning tool away from the gum line towards the biting edge of the tooth.\r\n\r\nCaution：\r\n✔1.Please clean your mouth with water after using the oral hygiene tooth kit.\r\n✔2.Please clean the oral kit after or before using, avoid cross-infection.\r\n✔3.It is not recommended for children to use this product.\r\n✔4.Please stop using when you still feel uncomfortable such bleeding, pain and so on according to the usage.