1. If the shelf life of the product exceeds one year, 45 days before the expiration date.

2, the shelf life of more than half a year but less than one year, 20 days before the expiration date.

3. If the shelf life is more than 90 days but less than half a year, it is 15 days before the shelf life.

4. If the shelf life is more than 30 days but less than 90 days, 10 days before the expiration date.

5. If the quality guarantee period is more than 16 days but less than 30 days, it shall be 5 days before the expiration date. If the shelf life is less than 15 days, it will be 1 4 days before the shelf life.

6. Temporary skin care products should be clearly marked with production date, safe use period or expiration date in a prominent position. If it does not exceed the service life, it can be sold and used during the warranty period.