For teeth whitening serum:

Before use, clean the mouth with warm water, then dipped a suitable amount of product with a cotton swab, wipe the tooth surface evenly, and rinse with water after 15-20 minutes. It is recommended to use 2-3 times a week.

prompt:
1. If spots are removed, wipe gently to avoid damaging the gums and oral mucosa;
2. After soaking the cotton swab, wet it properly to make sure it is not too wet.
3. It takes about 1 minute to wipe each tooth;
4. If the spots cannot be completely removed, please use it again after one week.

5. Children under 13 years do not use it. Don't try to swallow.