This teeth whitening pen has a simple design and a small size, so you can put it in your pocket or wallet and carry it with you. Whiten your teeth anytime and anywhere as needed. The pen device has a durable twisting mechanism and comes with a soft brush head. It can gently apply the whitening formula to each tooth and the gaps between them for a complete whitening experience. It can give you a long - lasting, white and bright smile without causing any harm or discomfort. When using it, simply brush a thin layer on your teeth. You can directly target the stained areas, ensuring no product is wasted and maximizing coverage for a perfectly even result. This teeth whitening pen can penetrate into all areas and corners, making your teeth whiten quickly and helping you achieve a perfect smile. Its mint flavor will make your mouth feel fresh, which is perfect for special occasions and can prevent embarrassing social situations.