Masks bought on Alibaba can be returned without use. According to relevant public information, contact the seller to return the goods:

1. Pack the things and send them to the address sent by the seller. The address and telephone number must be filled in correctly.

2. You need to fill in the single number on Taobao, open the mobile phone Taobao, click My Taobao, and then click Refund to enter the baby details page to be returned after sale.

3. Click to fill in the return information. Then fill in the logistics information sheet accurately according to the obtained information.

Finally, the seller will get a refund after receiving the goods.