Blackheads on the forehead, which can be squeezed out as a rice-like substance, can be considered as blackheads and are formed by sebum storage as well as oxidation. When the sebaceous glands on the forehead, nose or other parts of the face produce more oil and the pores are blocked by epidermal keratin flakes, sebum cannot be discharged in a timely manner and is stored in the hair follicles. After a period of time, the follicle opening can be enlarged and a hard, yellowish-brown keratin plug can be formed. The lipid portion that comes into contact with the air can be oxidized and become black, forming blackheads, and hard, rice-like keratin plugs can be discharged by squeezing the surrounding skin. If you have a large number of blackheads on your face or other parts of your body, you can choose to go to a hospital specialist according to your wishes and follow the doctor’s instructions for treatment. It is recommended to eat less spicy and stimulating, fatty foods, and pay attention to skin hygiene.