The innovative pen-shaped integrated packaging design seamlessly combines the whitening gel with the brush head. No additional tools are needed; one product handles the entire process. The screw-type liquid dispensing structure precisely controls the amount, avoiding waste and overflow. The built-in silicone brush head seamlessly connects with the tube body, and when stored, it is completely sealed, ensuring hygiene and preventing leakage. The overall body is small and slender, with a diameter of approximately 2 cm. It can be easily inserted into bags, makeup cases, and carried around during business trips, commutes, or travels without any burden. You can enjoy exquisite care anytime and anywhere, perfectly adapting to the fast-paced lifestyle.