Having blackheads with metronidazole gel is not useful. Metronidazole gel is a kind of anti-anaerobic bacterial drugs, the main ingredient is metronidazole, belongs to the antibiotic class of drugs, for inflammatory papules, pustular herpes can play a role in improving. Blackheads belong to a kind of acne, generally due to excessive keratinization of follicle epithelial cells, so that the local sebum accumulation caused by, if you want to remove the blackheads, you need to use to regulate the follicle keratinization of the drug, such as adapalene gel, vinpocetine cream, etc., but metronidazole gel can not be removed from the blackheads, so there are blackheads with metronidazole gel is not useful. All of the above drugs need to be used reasonably under the guidance of a specialist, and it is strictly prohibited to use drugs blindly on your own.