How Often Should You Replace Razor Blades? Shaves Per Blade, and the Cost Per Shave
Replace a razor blade after about 5 to 10 shaves, or roughly every 1 to 3 weeks for a daily shaver — go by feel and coarseness, not the calendar. Signs it's done: tugging or pulling, more passes to get smooth, irritation or razor burn, and visible dullness or rust. Shave count depends on hair coarseness, area shaved, and how well you rinse and dry the blade between uses. Because cost per cartridge varies widely, the number that actually matters is cost per shave — a $2.74-median cartridge that gives 7 shaves costs about 39 cents a shave, and a cheaper multipack cuts that in half.
By OutletPicks Editorial 5 min read· updated 7/15/2026
What shaving & grooming costs per cartridge
Live price terciles across the 42 shaving & grooming products we track, by real cost per cartridge.
| Tier | Cost / cartridge | Example pick |
|---|---|---|
| Budget | $0.60–$2.08 | Amazon Basics 5-Blade MotionSphere Razor… ($1.53/cartridge) |
| Mid-range | $2.32–$3.50 | Harry's Original Razor Blades for Men - 10… ($2.87/cartridge) |
| Premium | $3.50–$6.25 | Gillette Mens Razor Blade Refills ($4.46/cartridge) |
Replace by feel, not by the calendar
There's no fixed number of days. A blade is done after about 5 to 10 shaves, and the right way to know is how it performs, not how long you've had it. For a daily shaver that's roughly every 1–3 weeks; a few times a week, every 3–6 weeks.
The signs a blade is spent
- Tugging or pulling on the hair instead of a clean cut
- More passes needed to get smooth
- Irritation, razor burn or nicks that weren't happening a week ago
- Visible dullness, gunk, or rust on the edge
Any one of these means change it — a dull blade is what causes most irritation, not "sensitive skin."
What changes the shave count
| Stretches the blade | Burns through it | |---|---| | Fine hair, small area | Coarse/thick hair, large area (legs, head) | | Rinse + dry after each use | Left wet in the shower | | Enough lather, exfoliated skin | Dry shaving, dead-skin buildup |
The single biggest factor is water left on the blade — corrosion, not cutting, dulls most blades. Rinse and pat dry and you routinely double the comfortable shaves per blade.
The number that matters: cost per shave
Cartridge prices swing enormously, so "how often to replace" only means something in dollars once you convert to cost per shave = price per cartridge ÷ shaves per blade:
- A $2.74-median cartridge (what we track) at 7 shaves → ~$0.39 a shave
- A cheaper multipack or store-brand cartridge easily halves that
- Double-edge safety-razor blades are usually the lowest cost per shave of all — a
few cents each — with a small learning curve
Across the shaving gear we track, cost per cartridge runs from about $0.76 to a $2.74 median — the same shave, several times the price, depending only on which pack you buy.
See the live rankings
Top 5 cheapest per cartridge right now
Live from the catalog, ranked by real cost per cartridge — cheapest first.
As of July 22, 2026: the cheapest cartridge we track is Amazon Basics 3-Blade Razor Refills for Men… at $0.60/cartridge. Re-checked daily — the cheapest listings refresh first.
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Frequently asked questions
How many shaves do you get from one razor blade?
About 5 to 10 shaves from a typical multi-blade cartridge or a double-edge safety razor blade. Coarse or thick hair, shaving a large area (legs, head), and shaving dry all shorten that; fine hair, a small area, and rinsing and drying the blade after each use stretch it. Go by how the blade feels — tugging and extra passes mean it's spent — rather than counting to a fixed number.
How often should I change my razor blade?
For a daily shaver, roughly every 1 to 3 weeks; for a few times a week, every 3 to 6 weeks. The clearest signals are performance, not time: pulling or tugging on the hair, needing multiple passes for a smooth result, new irritation or razor burn after shaving, and any visible dullness, gunk or rust on the blade. A blade left wet between shaves dulls and corrodes faster, so replace sooner if you don't dry it.
How do you make razor blades last longer?
Rinse the blade thoroughly after every pass and shake or pat it dry — trapped water is what corrodes and dulls the edge, not the shaving itself. Store the razor somewhere dry, not in the steamy shower. Shave with the grain first, exfoliate so you're not cutting through dead skin, and use enough lather. These habits routinely double the number of comfortable shaves per blade, which halves your cost per shave.
Are expensive razor cartridges worth it?
Sometimes, but the markup is steep. Brand cartridges can cost several times more per cartridge than store-brand or double-edge blades that shave comparably. The honest way to compare is cost per shave: cartridge price divided by how many good shaves you get. Double-edge safety-razor blades are usually the lowest cost per shave by far, though they have a small learning curve.