If small particles appear on the face, it is likely to be the phenomenon of fatty grains, which is generally caused by the blockage of sebaceous ducts, the oil secreted by the sebaceous glands can not be discharged normally, accumulating in the ducts, it will form fatty grains-like particles. The first thing you need to do is to control your diet and avoid eating too greasy food. Secondly, you should pay attention to the cleanliness of your skin and use some oil-removing cleansers or deep cleansing masks to clean up the facial oil and metabolites in time to reduce the risk of sebaceous duct blockage. You can also pay attention to eating foods rich in vitamin A, such as carrots, in your diet.