The razor blades lasts for up to one month (based on twice-a-week shave); just use and replace when you're ready for a new one, SAVE TIME: the razor has 3 built-in blades, shaving hair quickly and effectively. Shave right, not more, ERGONOMIC HANDLE: designed with a soft-grip gel to comfortably fit your hands, and made with 30% Post-Consumer Recycled plastic, SMOOTH & CLOSE: the razor's 3 blades bring a smooth, close shave with ease, SOFT SHAVING: with protective elastomer comfort cushions around the blades, Any Venus blade refill fits any Venus razor handle (except Simply Venus and Venus Pubic Hair and skin).