DescribeShelf life:2 years1. Highly effective yellowing, and restores a naturally white smile.2. Portable design, small and easy to carry, convenient and fast for dental care anytime, anywhere.3. Mild formula does not damage tooth enamel, suitable for daily use, safe and healthy oral care.4. Simple operation, penshaped design for precise application, quickly brightens the color of teeth, and the effect is remarkable.5. Suitable for a variety of dental problems, such as discoloration caused by coffee, tea, smoke stainsPrecautions:1. Keep out of reach of children to prevent accidental ingestion.2. If you feel unwell, stop using immediately.3. Do not use on damaged or swollen skin.4. Store in a cool and dry place.Comment:1. The manual measurement tolerance is 25g, please do not mind your replacement2. Due to differences in different displays, the images may not reflect the actual color of the product. Thank you very much