The time it takes for seborrheic dermatitis to heal is predicated on the severity of the inflammation and the treatment method used by the patient. If the patient’s seborrheic dermatitis is mild, some people will gradually heal even without treatment, such as due to bad lifestyle habits, and if the bad lifestyle habits are improved, it will gradually heal in about 3-4 weeks. If seborrheic dermatitis forms a significant recurrence, by certain medication, the patient is more sensitive to the medication and may have a significant effect in 1-2 weeks. However, maintenance treatment is also needed to remove the triggering factors for gradual improvement or healing.