Have sensitive skin, or prone to small nicks and cuts? We’ve got you covered in more ways than one. The Proraso Post-Shave Stone is a block of 100% natural Potassium Alum that helps reduce redness, soothe, tone and disinfect the skin, and works as a styptic to help stop the bleeding of those small cuts or nicks. It's the hallmark of a professional shave. But how to use it? Press play to find out.