Quantity: 3Product Name: Teeth Whitening PenProduct Weight: 20gProduct Packaging: Blister + Paper Card Packaging[Applicable People]1. Suitable for yellow teeth and black teeth caused by various exogenous turbidity such as smoke stains, tea stains, coffee, cola, red wine, colored food, bad living habits, etc.;2. For severe fluorosis and severe tetracycline teeth, the use of this product has some improvement, but the effect is limited.[Usage]1. First use a toothbrush or dental floss to clean your teeth.2. Rotate the back of the whitening pen to squeeze the whitening gel onto the brush on the head, and evenly apply the tooth whitening gel to the surface of the upper and lower teeth, with a thickness of about 1mm (generally, the whitening range is 8-10 teeth on the upper and lower teeth). Each time takes 20 minutes and lasts for a week.[Product Storage] The whitening pen needs to be stored in a refrigerator. The shelf life is 1 year if not refrigerated, and 2 years if refrigerated. Please do not place it in a high temperature environment for a long time.[Precautions] The whitening gel should be placed out of reach of children. Do not use it during breastfeeding.