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Aftershave is used for exactly what the name says — to treat your skin after you’ve shaved.

The benefits of aftershave depend on exactly what’s in it. But traditional alcohol-based astringent aftershave has acted like a sanitizer for the face after shaving facial hair.

Here’s why: when you shave, you often leave behind many tiny cuts and exposed bits of the epidermis (skin) and pores that are more likely to get bacteria or other material lodged inside.