The common causes of facial spots are: genetic factors, chemical stimulation, ultraviolet radiation, abnormal hormone levels, and so on. 1. Genetic factors: for example, coffee spots, nevus of Ota, etc. are closely related to heredity. If both parents have spots on their faces, the probability of their offspring having spots on their faces will be higher. 2. Chemical stimulation: for example, long-term use of poor-quality skin care products and cosmetics will cause direct stimulation to the skin, resulting in localized melanin deposition, which will lead to facial spots, such as chloasma. 3. Ultraviolet radiation: If the face is directly exposed to sunlight for a long period of time and subjected to ultraviolet radiation, the synthesis of melanin will be accelerated, resulting in the deposition of melanin on the face, which will lead to facial blemishes, such as freckles and chloasma. 4. Hormone level abnormality: for example, mental stress, frequent staying up late, endocrine system diseases, etc. will lead to endocrine disorders, resulting in hormone level changes, which in turn cause skin metabolism dysfunction and lead to spotting on the face, such as chloasma. All in all, if the facial spots are small in size and have no uncomfortable symptoms, they can be observed first. If the spots on the face are large and have uncomfortable symptoms such as itching, it is recommended to consult a doctor in time and follow the doctor’s prescription.