Feature 1.The whitening effect effectively removes tea stains, coffee stains, tooth pigments and plaque. 2.Teeth whitening, reducing tooth dirt, enhancing oral hygiene and reducing oral diseases. 3.Can be used on the go 4.Whiten your teeth faster 5.Easy to use : 1.Brush and floss your teeth. 2.Dry the teeth with a paper towel. 3.Rotate the bottom of the pen clockwise (to the right) until a small amount of gel flows from the gel cavity onto the brush. You may need more twists for the first use. 4.Keep your lips away from the teeth broadly. 5.Use a uniform brush stroke to apply a thin layer of gel on each tooth. Do not apply gel on the gums. 6.Relax your lips after 30 seconds. 7.Avoid eating or sagging within 30 minutes after . 8.Use twice a day until your teeth reach the desired white shade. 9.Be sure to close the lid to prevent the serum from drying out. 10.Store in a cool place, preferably refrigerated. Specifications: Detailed Applicable object: Adult Function: teeth whitening Net content: 3ml-3g-0.1oz Efficacy: teeth whitening Package Included: 1*Whitening Brush Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.