Small pimples after hyperpigmentation is a common post-laser adverse reaction, which disappears after about 7~10 days. If the symptoms persist, it is recommended to visit a dermatologist for treatment. Epidermal regeneration after hyperpigmentation takes about 7~10 days. During the healing process of the skin, the epidermis needs to make new connections with the hair follicles and sweat ducts, and during this process, the skin appendage structures can become obstructive, resulting in cysts, pimples, and pustules, which are the adverse reactions, and the pimples occur in about 15% of the cases, and disappear on their own after 7~10 days. It is recommended to avoid skin irritation, moisturizing and sun protection after the procedure. 1. Avoid skin irritation: Use neutral cleanser to clean the face, avoid heat stimulation, such as sauna; avoid the use of irritating products, whitening or acid products. 2. Enhance moisturizing: Enhance moisturizing can let the skin in the repair of the maximum effect, it is recommended to use neutral and mild and does not contain fragrances and preservatives of the moisturizing products. 3. Sunscreen: Reduce the damage of ultraviolet rays and avoid the loss of collagen. If there is a small pimple after hyperpigmentation, it is recommended that the patient consult a regular hospital, under the guidance of the doctor for symptomatic treatment.