Melanin precipitation on the face after removing spots can be dealt with through life conditioning, use of whitening products, medication and photoelectric treatment. 1. Life conditioning: It is necessary to strictly protect oneself from sunlight, apply sunscreen in advance when going out, and use a hat or umbrella to cover up and reduce the stimulation of ultraviolet rays. 2. Use of whitening products: some cosmetics or skin care products with whitening and sunscreen effect can be used recently to protect the skin after removing spots. 3. Medication: If necessary, you can apply azelaic acid gel, hydroquinone cream and other ointments that have the effect of improving pigmentation to alleviate pigmentation. 4. Photoelectricity treatment: If the patient’s melanin precipitation is more serious, it can also be treated by picosecond laser, photorejuvenation and other methods if necessary. It is recommended that patients consult a doctor in a timely manner and strictly follow the doctor’s instructions to carry out the corresponding conditioning treatment to avoid aggravation of pigmentation.