The swelling of the face the next day after applying the mask indicates an allergic reaction to the mask. First of all, you should stop using the mask immediately and wash your face with warm water, without using cosmetics, or chemicals like face wash, moisturizer or sunscreen. Secondly, regular treatment should be carried out. You can take oral levocetirizine hydrochloride capsules, one capsule every night. Combined compound glycopyrrolate capsules are given three times a day, one capsule at a time. If the swelling not only does not subside after 3-5 days of application, but also has a tendency to become more serious, then it is necessary to immediately change the oral compound glycyrrhizin to an intravenous injection of compound glycyrrhizin monoammonium S chloride 200 ml once a day, or even an intramuscular injection of compound betamethasone once a day, one capsule at a time. At the same time, you need to avoid spicy and stimulating food, and ensure a happy mood and good rest and sleep.