Removing blackheads may cause infection, enlarged pores, cause scars and other hazards, so it is not recommended. 1. Infection: the tweezers used by some patients to remove blackheads are not sterilized with alcohol, which will lead to bacterial infection, causing the skin to appear hot, red and swollen, or even pus accumulation, so it is not recommended to remove blackheads. 2. Enlarged pores: removing blackheads makes the pores bigger, squeezing blackheads will destroy the skin tissue around the pores, and long-term squeezing of blackheads will lead to gradual enlarging of pores, so removing blackheads is not recommended. 3. Causing scars: removing blackheads will damage the local skin, and may even hurt the hair follicles as well as the skin tissues around the pores, leading to scarring, so removing blackheads is not recommended. When blackheads appear on the skin, it is recommended to go to the dermatology department of regular hospitals for examination, and get rid of them under the guidance of doctors to avoid the harm brought by self-treatment.