How many days can the redness of face allergy be cured depends on the severity of the patient’s symptoms, and it usually takes about 7-10 days if the allergy symptoms are not serious. Usually, the redness of the face is mainly due to contact with allergens, and after the removal of the allergens, the patient can be healed within a short period of time. For patients with mild symptoms such as redness, peeling and itching of the face, most of them can recover in about 7 days. However, for allergies triggered by the use of poor-quality cosmetics, etc., they are relatively more serious and the recovery time will be relatively longer, about 10 days. Meanwhile, during the period of facial allergy, patients need to develop good habits, actively improve the diet, avoid eating spicy and stimulating food, so as to avoid aggravation of the symptoms. Patients should also avoid using irritating products and subjecting the face to hot and cold stimuli, which may prolong the recovery time. If the patient’s symptoms are more serious, the use of antihistamines such as loratadine and cetirizine should be used under the guidance of a doctor. It is recommended to take reasonable treatment measures under the guidance of a doctor and pay more attention to self-care when the phenomenon of face allergy and redness occurs.