White stuff inside the skin usually refers to sebum and other substances. Enlarged pores can be treated with general treatments and photorejuvenation. Sebum can be improved by general treatment. 1. Enlarged pores: Patients are advised to take good care of facial hygiene and clean up sebum and other substances inside the pores. It can also be improved by photorejuvenation, using specific broad-spectrum colored light to irradiate on the skin surface to stimulate collagen production and improve the symptom of enlarged pores. 2. Sebum: It is recommended to keep the affected skin clean, avoid squeezing and rubbing the affected area to prevent infection. Avoid eating greasy, high-sugar food recently, you can use warm water to wash the affected area, but should not wash too much. Avoid staying up late at night to prevent sebum secretion. It is recommended that patients with enlarged pores and sebum should take good care of their pores on a daily basis, and generally no treatment is needed. If it affects the aesthetics, it is recommended to go to the hospital and follow the doctor’s instructions to choose the appropriate treatment.