The unique dual-sided SkinProtect blade also allows you to easily shave up or down to trim or style with confidence. Also included is a detachable 3mm body comb that makes it fast and easy to trim intimate and body hair. OneBlade Intimate SkinProtect blades are 100% waterproof- so feel free to shave while bathing or showering if that's what you prefer. Dry shaving's OK too, with or without foam. Just rinse under running water to clean. Our blades are made from stainless steel that's durable enough to last up to 4 months* (that's just 3 blade replacements per year!)