Seattle — For most of the last forty years, shaving has meant one thing: a plastic handle, a pivoting head, and a cartridge of three to five blades stacked close together. It shaves. It also costs a surprising amount to keep doing it, and a surprising number of men have started doing the arithmetic.
The arithmetic goes like this. Cartridge refills are sold in small packs at premium prices, and the blades dull on a schedule set by the manufacturer, not by your face. Replace them every few weeks, year after year, and the refill bill quietly stacks into one of the more annoying recurring costs in a bathroom. It's not the razor you pay for. It's the refills, forever.
A double-edge safety razor inverts that math. The handle is a solid piece of metal you buy once. It takes a standard double-edge blade — the same basic blade format that has been made, by many makers, for the better part of a century — and those blades cost a small fraction of what a cartridge refill does. Because the format is an open standard rather than a proprietary mount, no single company owns the refill market for your razor. The savings are not dramatic on any single purchase. They're dramatic on the timeline of a decade of shaving.
One detail worth knowing if you're weighing the switch: the razor referenced above ships with starter blades in the box, so there's nothing else to buy before your first shave. The blades themselves are a refillable standard — available from a range of makers, not one brand's locked-in cartridge.
The irritation argument
The case against cartridges is not only financial. Dermatologists have long described the mechanics of razor bumps and ingrown hairs in terms of what a multi-blade head actually does: the first blade tugs the hair out slightly, and the blades behind it cut the hair off below the skin line. When the hair retracts and regrows, a share of those hairs curl back into the skin instead of out of it. For men with coarse or curly hair, that's the difference between a clean shave and a week of bumps.
A single sharp blade, drawn with light pressure across well-prepared skin, cuts the hair at the skin line rather than under it. It's the reason a classic barbershop shave — hot towel, warm lather, straight razor — tends to leave skin calm rather than raw. Wet shaving with a safety razor borrows that preparation: the hot water softens the hair, and a dense lather from a proper shaving soap lets the blade glide instead of scrape.