Allergic redness of the face, due to allergic mechanisms leading to inflammatory reactions, resulting in local capillary dilation, resulting in obvious redness symptoms, should immediately wash the face gently with water or light salt water to remove the substances that cause facial allergies, and then use cold towels or cold water-soaked gauze on the red parts of the face, through continuous cooling to make the dilated blood vessels contract to relieve symptoms; then seek medical consultation, under the guidance of the doctor 1, wet medicine: boric acid solution wet compress, with anti-inflammatory, swelling, antibacterial, astringent and clean wound role, or the use of glutamate lotion, with astringent, protective effect; 2, topical drugs: topical anti-inflammatory, anti-itch cream, but also short-term small doses of hormonal creams, common creams such as zinc oxide cream, hydrocortisone butyrate cream, etc.; 3, oral medication: at the same time, oral medication can be used to reduce the redness of the face. The following are some of the most common anti-inflammatory and anti-itch creams, such as zinc oxide cream, hydrocortisone butyrate cream, etc.; 3. In addition, you should stay away from allergens to prevent aggravation or recurrence of allergy. During the treatment of allergy, pay attention to avoid spicy and irritating foods, reduce skin care steps, disable cosmetics, and pay attention to avoiding light.