Generally speaking, if treated properly, acute facial dermatitis recovers relatively quickly, with results visible in about a week and basically completely healed in two weeks. If the cause is clearly identified, the speed of recovery will be even faster. For example, some patients have mild solar dermatitis, and their symptoms can be relieved in a few days after avoiding sunlight; some contact dermatitis can be relieved soon after the allergen is identified, such as a certain cosmetic allergy, and the dermatitis is not used in the future. However, we still advise patients not to stop the medication on their own, and it is best to visit the hospital; if the symptoms are effectively relieved but the cause is unknown, a follow-up visit is also needed after two weeks to assess the effectiveness of the treatment and also to do allergen testing to avoid a recurrence of the disease. If the effect is not obvious by two weeks, or not completely well, you must go to the hospital for a follow-up examination and adjust the medication, because the hormones used in the treatment have a certain dependency and cannot be used for a long time, the doctor has to adjust the type of medication and the amount of medication according to the recovery; if the dermatitis recurs after recovery, it may not necessarily repeat the previous medication program, and the doctor needs to avoid dependency by adjusting the medication and changing it. Patients with dermatitis need to bring previous checklists to the clinic, such as patch test sheets (patch tests done in other hospitals are also recognized), blood tests (to identify whether other immune skin diseases such as lupus erythematosus, co-infections, etc.), and IgE tests (to identify whether atopic dermatitis is present), which are important for disease diagnosis. In order to better evaluate the efficacy of the treatment, it is recommended that patients take “selfies” at least once a week, so that the doctor can observe the effect of the treatment in a comparative manner.