Laser blemish re-darkening, also known as post-inflammatory hyperpigmentation, is a self-repair process of the skin and patients need not worry too much about it. Each person’s body and skin type is different, so the recovery time after re-tanning is also different for each patient. The recovery time for most patients is 1-3 months, while for patients with slower cellular metabolism and poorer physical quality, it may take 3-6 months to recover. In addition, patients should pay attention to the following points after using laser spot removal: 1. Pay attention to reducing sunlight time and avoiding exposure to the sun after spot removal to prevent melanin precipitation so as not to cause anti-tan phenomenon. Patients must do a good job of sun protection before going out, such as playing umbrella and applying sunscreen; 2. After laser spot removal, patients must pay attention to hydration and moisturizing, usually eat more fresh fruits and vegetables rich in vitamins and drink more water; 3. It is strictly forbidden to use skin care products with greater irritation to avoid hindering skin repair and even causing further damage to the skin.