Effectively Removes Stains Our V34 Teeth Whitening Pen effectively removes years of stains caused by coffee, tea, alcohol, smoking and soda. With continued use, you'll see results for your beautiful smile. High-quality ingredients, mild enamel ingredients, gentle and deep penetration, not sensitive. The flexible brush head allows for easy application of teeth whitening gel into crevices and across the entire tooth surface. Stain removers can whiten teeth. The easy-to-carry teeth whitening gel pen is easy to carry and put in your purse or pocket, suitable for business trips or travel, start your oral care anytime, anywhere, whiten your teeth and enjoy a bright new smile. Easy to use Keep teeth clean and dry; then turn the twist mechanism on the bottom of the whitening pen to let the gel drip into the brush head. Apply a layer of tooth whitening gel to the surface of the teeth and between the teeth. Let the gel soak into the teeth completely. Convenient and Quick Use these teeth whitening gels once a day or as needed to whiten teeth in just 5 minutes at home or in the office and are easy to carry when traveling. A beautiful white smile makes you more confident and calm.