Many people blindly choose laser, thinking that laser is fast in removing pigmentation directly, but they do not know that improper laser treatment not only cannot remove pigmentation, but also may deepen or expand the area of pigmentation. 1. Freckles are yellowish brown pigmentation spots on facial skin, mostly appearing at the age of 3 to 5 years old, more in women. Its number increases gradually with age. It occurs on the face, especially on the nose and cheeks, and can involve the exposed parts such as neck, shoulders and back of hands, but there is no rash on non-exposed parts. The lesions are light brown or dark brown pinhead-sized to green bean-sized rashes, round, oval or irregular. They are scattered or clustered and do not fuse in isolation. No conscious symptoms. The rash deepens in color and increases in number after sun exposure in summer, but decreases or disappears in winter. There is often a family history. The pigment of freckles is in the outermost layer of the skin, which is easier to remove. Treatment: Intense pulse photorejuvenation treatment. If the patient’s complexion is darker, it is recommended to combine acupuncture with Chinese herbal mask after one or two courses of external treatment with photorejuvenation treatment. 2.Chloasma, also known as liver spot, is a yellow-brown pigmentation on the face, mostly symmetrical butterfly-shaped distribution on the cheek. It is mostly seen in women, and the high level of estrogen in blood is the main reason, and its onset is related to pregnancy, long-term oral contraceptives and menstrual disorders. The lesions are yellowish brown or dark brown patches, often symmetrically distributed on the cheek and cheek area, but may also involve the periorbital area, forehead, upper lip and nose, and the edges are generally more obvious. There are no subjective symptoms and general discomfort. The shades of pigmentation are related to season, sunlight and endocrine factors. Mental stress, staying up late, and exertion may aggravate the lesions. The yellowish-brown pigmentation spots on the facial skin mostly appear at the age of 3-5 years old, and there are more females. Its number gradually increases with age. It occurs on the face, especially on the nose and cheeks, and can involve the exposed parts of the neck, shoulders and back of the hands, but there is no rash on non-exposed parts. The lesions are light brown or dark brown pinhead-sized to green bean-sized rashes, round, oval or irregular. They are scattered or clustered and do not fuse in isolation. No conscious symptoms. The rash deepens in color and increases in number after sun exposure in summer, but decreases or disappears in winter. There is often a family history. The pigment of freckles is in the outermost layer of skin, which is easier to remove. Treatment: There are more laser treatments (strong pulse photorejuvenation or Q1064 laser treatment) in the market, but laser treatment for melasma is fast and easy to rebound, and if the energy is too large, it will cause pigmentation along with area expansion. In fact, acupuncture combined with herbal mask is very effective in treating melasma, but the course of treatment is long, requiring about three courses of treatment. So if you want to whiten quickly and thoroughly, you may want to combine laser with acupuncture treatment, the effect is good. 3.Coffee spots Coffee spots, also known as coffee milk spots, are light brown patches that can be found at birth. The color of coffee spots varies from light brown to dark brown, but the color of each patch is the same and very uniform, the depth is not affected by sunlight, the size varies from several millimeters to tens of centimeters, the border is clear, and the texture of the surface skin is completely normal. Treatment: The pigment of coffee spot is located in the outermost layer of the skin and can only be removed by laser and photorejuvenation, but the effect varies from person to person, a few of them have good effect, most of them are easy to rebound and pigmentation. 4. Brownish nevus Brownish nevus (dermal spot) is a kind of congenital non-genetic skin pigmentation disease, because it is usually found in the cheek area, also called zygomatic mother spot. It occurs mostly in women, and the age of onset is mostly from 16 to 40 years old, and some patients have family history. The main pathological feature is the symmetrical distribution of dark gray spots in the zygomatic area with a diameter of about 1 to 5 mm, without any conscious symptoms. Treatment: The pigment of this kind of pigment is located in the dermis, and its treatment method can refer to the treatment of melasma. 5. Age spots Age spots are also called seborrheic keratosis. It is a kind of benign epidermal proliferative tumor that appears on the skin, mostly on the exposed parts of the face or arms. Treatment: Treatment with Q-switched laser can usually eliminate it completely.