Osma Styptic Pencil (aluminum sulfate) is used whenever you cut yourself. It is far more intense and not the same thing as the Osma potassium alum blocks. Much like styptic pencils you can get at a corner drugstore, at least they’re the same aluminum sulfate, but Osma as usual has found a way to incorporate more retained water in the device. No application of styptic pencil’s as fun as watching “Star Wars” the first time, but this easily is the least irritating one I’ve tried of about half a dozen. Kind of a must for a first-time shaver, and while we’ve always known that ’round here, until we could get this one I didn’t want something common and ubiquitous (at least here in the USA) on offer. Made in France.
This pencil’s ~0.4 oz (12g) of product, weighs ~0.6 oz (17g) in its reservoir, and takes up 0.6 x 4.1″ (15x104mm) in a travel bag. Hold tip under faucet a sec and put right on the cut with pressure.
Do not share this device with anyone, it is like a hypodermic needle in that regard!