eShave"s carefully constructed shaving regimen softens hair and opens pores, letting the razor glide easily over the skin. However, should a nick occur, eShave Alum Block stops the bleeding on contact. Made of naturally extracted alum and potassium, this block forms a solid clot that stops bleeding instantly. Potassium is antiseptic and astringent, making it great for toning the skin and closing pores after shaving.