According to the provisions of the Measures for the Supervision and Administration of Medical Devices, cosmetic shops can sell medical masks on the premise of legal application and approval. However, it should be noted that medical masks belong to medical devices, and their operation and management should be carried out in accordance with medical device regulations. According to the Regulations on the Supervision and Administration of Medical Devices, medical dressing products are classified according to the degree of risk from low to high, and managed according to the first, second and third types of medical devices respectively.
Therefore, if Xie Zi's medical mask belongs to the first class, the second class or the third class of medical devices, and has obtained the corresponding business license, then it can be sold in cosmetics stores. However, it should be noted that cosmetics stores should abide by the relevant provisions of the Regulations on Medical Devices when selling medical masks.