The t-zone generally refers to areas of the face such as the forehead and nose, and having many small particles may be related to fat grains, acne, and folliculitis. 1. Fat grains: If tiny wounds occur in the damaged skin of the t-zone of the face, small beige-colored cysts can be generated during the skin’s self-repairing process, and if tiny wounds occur in multiple places, they may lead to having many small particles. 2. Acne: If abnormal hormone levels, excessive sebaceous gland secretion, excessive epithelial keratinization of hair follicles and Propionibacterium acnes infection cause acne to occur on the facial skin, many small particles may appear in the t-zone. 3. Folliculitis: If you don’t clean the t-zone properly, the follicle openings can be blocked by dust and other obstructions, resulting in the appearance of many small particles. It is recommended that people with a lot of small particles in the t-zone go to a regular hospital in a timely manner, to clarify the cause of the disease, and under the guidance of the doctor for standardized treatment.