Content:4pcs/pack Shelf life: 3 YearsFunction:Promotes Healthy Teeth & Gums / Brighten and Whiten Teeth / Removes Teeth Stains / Gums Care Storage method: Store in a cool dry place Features: 1.This tooth whitening pen protects your gums by providing protein and safeguarding the tooth enamel, effectively removing stains and promoting overall oral cleanliness. 2.Achieve pearly white teeth with this teeth whitening essence pen, saying goodbye to discoloration and stains, and transforming your teeth into a radiant pearl-like appearance. 3.Say goodbye to bad breath as this gum therapy gel not only whitens teeth but also eliminates mouth odor, leaving you feeling confident and fresh throughout the day.4.This teeth whitening gel gradually reduces tooth discoloration by breaking down melanin, minimizing dental problems and ensuring a fresh mouth. 5.Our teeth whitening cleaning pen is made from natural materials with safe and healthy ingredients. How to use: 1.Brush your teeth before use. 2.Rotate the bottom to squeeze out an appropriate amount of gel, apply gel evenly on teeth, avoid eating or drinking for 30 minutes, and then rinse your mouth with water. 3.Use it daily to get better results.