Alum is a straightforward answer to the occasional shaving nick. When dampened, its astringent action helps control bleeding from a small, superficial cut. It is fragrance-free and leaves no creamy or oily layer on the skin.
An alum block can be used across a wider freshly shaved area, while a styptic pencil lets you target the nick itself. Rinse the alum after use and let it dry completely before storing it. If your skin is dry or sensitive, apply it only where needed and follow with a balm.