A new way to make your smile brighter: hide stains, increase brightness, and neutralize yellow.Features: It can effectively clean and dissolve stains on teeth, make teeth whiter, provide fresh breath and healthier gums Help decompose pigmentation on the surface of teeth, prevent pigmentation, and make your teeth no longer yellow Use of teeth whitening essence: Before use, clean your mouth with warm water, then dip a cotton swab in an appropriate amount of product, wipe the tooth surface evenly, rinse with clean water after 15-20 minutes, and it is recommended to use it 2-3 times a week each time. Tips: 1. When removing stains, please wipe gently to avoid damaging the gums and oral mucosa; 2. Moisten the cotton swab appropriately after moistening to ensure that it is not too wet; 3. It takes about 1 minute to wipe each tooth; 4. If the stain cannot be completely removed, use it after one week; 5. Do not use it for children under 13 years old. Do not try to swallow.