The base component of astringent that is alcohol has an antibacterial property. And it helps in the evening of skin tone and minimizing the pores. The antibacterial property of it helps fight acne that is caused by p. Acnes bacteria that is common when one is constantly in exposure to such pathogenic microorganisms. This was one of the answers to the question from Astringents, students can find more such questions on Vedantu’s official website. They can also find solutions to NCERT Exercises of this and many other chapters.