Teeth whitening serum suitable for all kinds of exogenous coloring, such as yellow and black teeth caused by stains, tea stains, coffee, cola, colored food, bad habits. Features Our tooth whitening essence powder is a good helper for cleaning the mouth, whitening the teeth and refreshing the breath. Applicable people: suitable for all kinds of exogenous coloring, such as smoke stains, tea stains, coffee, cola, colored food, yellow teeth, black teeth caused by bad habits. It has strong absorption and humidification capabilities. Effectively remove various stains on the surface of teeth, such as smoke stains, coffee stains, while whitening teeth and eliminating bad breath. Its components can reduce the rough texture of the tooth surface, thereby protecting tooth enamel. It improves oral hygiene. Usage for Teeth Whitening Essence: Before use, please clean the mouth with warm water, then use a cotton swab to dip proper amount of the product, wipe the teeth surface evenly and rinse it with clean water after 15-20 minutes, we recomend to use 2-3 times per week. Tips: 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; 5. Children under the age of 13 should not use it. Do not try to swallow. Package Including: 1/2/3 Pack Teeth whitening essence