Whitening your teeth has never been this easy or convenient. Within one 30-minute treatment, you will see visible results in the comfort of your own home. Home teeth whitening means not having to go to the dental office and pay the high expense. The professional teeth whitening gel from the mouth syringe can also be used daily. Features - Color: Transparent. - Material: Synthetic materials. - Size: 12x1.5x1.5cm/ 4.72x0.59x0.59 inch. - Capacity: 4ml. - After cleaning the teeth, remove the and rotate the end of the whitening pen until the essence overflows onto brush head. - Then apply the product on the teeth evenly and rinse it with clean water after 15-20 minutes, we recomend to use 2-3 times per week. - Applicable to smoke stains, tea stains, coffee, cola, red wine, colored food, bad habits and other reasons caused by yellow teeth, black teeth. - Whitening your teeth has never been this easy or convenient. A nice gift for yourself. - Do not use this product if suffering from dental ulcers,broken gum, or after oral surgery.