When the skin is dry after the allergy is well, the first thing you need to do is to apply a moisturizer, such as dimethicone oil or vitamin E ointment for application, and then apply the treatment plan of sealing the package after application, which is to wrap the affected area with sterile cling film so that the moisturizer can fully penetrate into the skin and make the dryness relieved. For dry skin, if scattered rashes such as small papules and erythema appear at the same time, glucocorticoid ointment, such as dinaide ointment or mometasone furoate ointment, can be applied for treatment, which can play both an anti-allergic role and a role in relieving dryness. During the above treatment period, avoid washing the affected area with hot water to avoid a large loss of moisture within the skin, which may cause the dryness to worsen.