Acne on the face can be squeezed to squeeze out the white stuff, which is actually a substance secreted by the normal sebaceous glands. Since the sebaceous ducts are obviously smaller and blocked, the sebum and epithelial cells that can be discharged normally cannot be discharged normally, so they accumulate in the ducts of the sebaceous glands, and if they accumulate repeatedly for a long time, the white color will appear. The actual fact is that there are a lot of people who think that this is the so-called mites. In fact, if the patient has not been squeezed for a long time, sometimes the squeezed out can also become a yellow hard sebum plug.