Most of the freckles are hereditary, often appearing in siblings, not at birth, but slowly appearing and obvious until adolescence, distributed on the face and various parts of the body like small rice grains, light brown or dark brown in color, round in shape, and most of the hands and feet also have them. It is difficult to be treated traditionally, but it can only be treated without increasing or becoming darker, by applying sunscreen or oil to avoid direct exposure to sunlight. 2, water deficiency spot: long-term water deficiency or malnutrition of the skin (improper maintenance), resulting in the lack of water or nutrients in the cells, and damage or even death, and caused by poor metabolism of melanin, the formation of large and small irregular spots, almost everyone has, just the amount of how much. If the usual less maintenance will become mixed spots or dermal spots in about 3 years, more often maintenance about 5 years, all water-deficient spots must be informed to the guests as soon as possible to take clean the better. 3.Elderly spots: floating on the surface, due to long-term loss of maintenance, skin aging or damaged ovarian function. They can occur in people with long uterine tumors. 4.Sun spots: sun spots are caused by excessive exposure to the sun and the increase of melanin pigment in the bottom layer of the skin, which gradually accumulates on the surface of the skin. Most of them are faceted or lumpy, yellowish brown or brown in color. This kind of sun spots is relatively simple to treat, and it will recover slowly by making nutritious and moisturizing compresses. Eat more vegetables and fruits containing vitamin C, and drink more water to strengthen the metabolism so that the pigmentation will fade. 5, stretch marks liver spots: also known as uterine liver spots, most of the menstrual cycle will deepen the color, tumors of reproductive organs and oral contraceptives can also lead to spots. It is a brown spot due to pregnancy, which occurs in 2~3 months of pregnancy, also called pregnancy spot, will disappear naturally after 1~3 months of delivery, sometimes there is still a little left on the face, not completely disappeared, at this time, we should apply massage, maintenance, bleaching compress for a long time, so that the pigment gradually becomes lighter and disappears in the invisible. 6, black spots: most of the long-term use of poor quality, stimulating the toxins containing mercury, arsenic caused by the cream, or A acid, fruit acid (bad peeling) or betel leaf, especially the use of perfume, rouge, blush, foundation, powder for the most, in recent years, the gradual increase in the number of patients, so the competition in the cosmetics business, some manufacturers disregard the consequences only for profit, cosmetics, creams mixed with mercury toxins, claiming to cure black spots, blisters, acne, bleaching. Because the toxin of mercury has bactericidal and bleaching power, but only temporarily has a bleaching effect, it will destroy the red blood cells of the skin, so that the fragile skin leads to dermatitis or dermatosis nigricans, more serious, the use of ointments containing mercury will enter the body from the skin pores, damaging the function of the liver and kidneys. The areas where it occurs are on the forehead, cheekbones, behind the ears, cheeks, and neck, and the color is light brown and will gradually become dark brown. In addition to cosmetics cause, sometimes due to partiality, excessive fatigue, lack of vitamin A and vitamin A, C, D, E, etc.. If the color is brown, it is the epidermal spot. Without immediate treatment, the melanin will penetrate deeper into the dermis, and the color will deepen into black or dark gray, and then it is the dermal spot. 7.Hematopoietic spots: As the name implies, cheekbone spots occur mostly in the cheekbone area. Some people’s spots may also occur on both sides of the upper forehead, and its color is usually gray or brown or even blue-black. The dermatopathology of cheekbone blemishes is characterized by the presence of walking melanocytes in the upper layer of the dermis. Because of the refraction of sunlight to the melanocytes in the dermis, the cheekbone spots appear grayish-blue. Because the cheekbone spots are the proliferation of melanocytes in the dermis, therefore, the topical medication is not effective for them. 8.Liver spot: also called chloasma, the majority of patients are middle-aged women, especially after menopause, cheeks, forehead, eye circles, nose wings, lips, around the chin, etc., are all skin exposure parts, especially the cheeks, will form left and right symmetry, the appearance of different sizes and irregular shape, the color spots are mostly light brown or dark brown, some pairs across the bridge of the nose, like a butterfly, so some people also called Therefore, some people call it “butterfly spot”. After being diagnosed, treatment should be carried out according to the guidance of professional doctors, and choose regular hospitals to carry out the treatment, and do not go to some small hospitals or beauty institutions, so as to avoid the recurrent deterioration of the disease and bring more physical and mental harm to patients.