If you want to prevent your face from being allergic to cold air, the best way is to avoid contact with cold air as much as possible. Especially in winter, if you go out, try to cover your face with a headscarf or towel; in addition, you should strengthen your exercise to improve the cold resistance of your body. If your face is already allergic, you can apply topical anti-itch creams, such as hydrocortisone butyrate cream or chlorcyclizine cream, and take oral antihistamines, such as loratadine or paracetamol. While using these medications, it is also necessary to pay attention to local warmth, and if local erythema and redness have appeared, try not to use particularly cold or hot water to stimulate.