1. Return: If the purchased Yangshengtang skin care products are still within the return period, you can contact the merchant to apply for a return. The merchant will provide the return process and requirements, and it is necessary to prepare relevant items and supporting materials as required, and apply for return according to the process.

2. Exchange: If the purchased Yangshengtang skin care products have quality problems or are inconsistent with the description, you can apply for exchange within the time specified by the merchant. Before applying for replacement, it is necessary to inspect the goods in detail to ensure that they are in good condition.