Teeth Whitening Pen Cleaning Serum Remove Plaque Stains Dental Tools Whiten Teeth Oral Hygiene Tooth Whitening PenOverview: Usage for Teeth Whitening Essence: Before use, please clean the mouth with warm water, then use a cotton swab to dip the proper amount of the product, wipe the teeth surface evenly and rinse it with clean water after 15 20 minutes, we recommend using 2 3 times per week. How To Use Teeth Whitening Pen: After cleaning the teeth, remove the cap and rotate the end of the whitening pen until the essence overflows onto the brush head. Then apply