Owing to its natural astringent properties this 100% natural Potassium Alum stone is an ideal post-shave companion to reduce redness soothe tone and disinfect the skin and work as a styptic to help stop the bleeding of small cuts or nicks. The hallmark of a professional shave. Originating in Italy Proraso has been innovating professional highest-quality products in the shaving world for generations and has evolved to become a staple of Italian culture. From the first product in 1948 to now the Martelli family principles hold true: to create professional quality products that deliver a pleasurable and impeccable shave in the barbershop and at home.