Fifty Years of Razor Innovation, and One Thing Nobody Fixed
The HONE Team
Razor companies have to write down what is wrong with their own razors. It is the price of a patent. We read fifty years of it — and the strangest thing in the pile is a razor from 2003 that was going to tell you to stop pressing.
The razor that was going to tap you on the shoulder.
In 2003, somebody at a razor company drew up a razor that paid attention.
It had sensors in it. They watched how far the blades flexed, how close the head was to your skin, how thick the stubble was, how wet it had got, and how worn the edge was. One version moved the blades mid-stroke to compensate. The simpler version just lit a small light.
The light had two things to say. You are pressing too hard. And your blade is finished.
Which, if you have ever walked out of a bathroom with a neck like a rash, are the only two things anyone ever needed to tell you.
Picture it for a second. A razor with a dashboard. You bear down on the jawline the way everybody does, a light comes on, you ease off, and that is the end of it.
It was never built. The application was abandoned, and twenty-odd years later no razor in any supermarket tells anybody either thing.
Somebody costed it, or tested it, or carried it into a meeting, and it did not come back out. The file simply stops.
Here is why we can tell you it existed at all. To get a patent you have to explain what is already out there and why it is not good enough. That explanation sits at the top of every filing. It is the one place a company has a reason to write down what is wrong with the thing it sells, and almost nobody ever reads it.
We read five of them.
The complaint that outlived everyone.
Start at one end of the pile. December 1971. A man called William Miller — no company, no laboratory, just a name on a form — patents a razor that squeezes out lubricant as you shave.
He has two gripes with the ones that already exist. The stuff runs out too fast. And how much of it you get depends on how hard you lean on the thing.
What he was after, in 1971, was a razor that carried its own soap. That is not a small idea. It is roughly the idea every cartridge on the shelf is still running on.
Now the other end. March 2018. BIC Violex, one of the largest razor manufacturers on the planet, patents a lubricating strip. You know the strip. It is the pale band above the blades.
Everybody has watched one die. It starts out slick, goes cloudy somewhere around the end of the first week, and from then on it is a bit of plastic doing an impression of a bit of plastic.
Their complaint is that it fades. They are oddly precise about when:
Forty-seven years apart. One bloke at a kitchen table, then a multinational. The same grumble, almost word for word.
Nobody ever stood up and announced they had fixed it. They just kept filing about it.
A complaint that shows up in two patents fifty years apart was never solved. It was re-filed.
One of these is not about shaving.
Line the five up by what each one says is broken, and something odd drops out.
Most of them are about your face. Hair pulls. Skin gets nicked. The lubricant gives up early. Those are complaints you would recognise as your own, because you have had all three.
Then there is Gillette in 1994, patenting the small plastic strip that sits above the blades. Read the opening and the thing they want to fix is that the moulds for making it cost too much.
That is a real problem. It is also a problem in a factory on the other side of the world, not a problem on your jaw. Somebody got a twenty-year monopoly for sorting out the tooling budget.
None of which is sinister. Patents are not where companies tell fibs — they are where companies are careful, because a sloppy one gets thrown out. Which is what makes the 1994 filing quietly funny. It is scrupulously careful about a problem you will never once have.
| Year | What they wrote down as the problem | What they proposed |
|---|---|---|
| 1971 | Lubricant runs out, and the dose depends on how hard you press | A little rolling cylinder that doles it out evenly |
| 1994 | The moulds for the plastic strip cost too much to make | A cheaper one-piece strip, soft outside, stiff inside |
| 2003 | A razor reacts to your skin too late to stop the damage | Sensors, and a light to warn you — abandoned |
| 2011 | Discomfort from the blades' "cumulative force or loading on the skin" | A row of tiny bumps between two blades |
| 2018 | The lubricating strip fades after three or four shaves | A new recipe for the strip that lets go more slowly |
The sentence in the Gillette file.
June 2011. Gillette again. This time they are patenting a row of tiny bumps that sit between two blades, about two millimetres apart — the width of the lead in a chunky mechanical pencil.
Buried in the opening is a line about where shaving discomfort actually comes from. Part of it, they write, is the number and the sharpness of the blades. And part of it is —
And the bumps, the filing says, bring that load down "without the addition of any extra blades."
Load is not a mysterious quantity, by the way. It is how much of your face is being pressed on, and by how many edges at once, every time you drag the handle down your cheek.
So read it backwards and you have the whole thing. Extra blades add load. More edges leaning on you, more weight per stroke, more of the sore neck the document describes two paragraphs earlier.
That is a Gillette document. Not a rival's advert, not a forum post, not us.
And nobody outside the trade was ever going to trip over it, because it is filed under a title that reads like a shelf label in a warehouse, while the television spent twenty years saying the opposite. If you want the mechanism rather than the paperwork, we wrote that up on its own: The Skin Barrier: What It Is and What Breaks It.
What we are not claiming.
Five patents out of tens of thousands. We picked them because their openings are blunt and because together they cover the whole stretch. That is a choice, not a survey. Read a different five and you would get a different article, so take the pattern as something worth a look rather than something we proved. We would rather say that plainly than dress five documents up as research.
And these are proper inventions. Making a one-piece rubber guard that survives a factory line at full speed is genuinely hard. Nobody here is sneering at the engineering.
What the five do show is smaller and a lot firmer. The industry knows that load on the skin is the thing that hurts you, because it wrote that down. It worked out that a razor telling you to ease off would help, wrote that down too, and then let it go. And a strip that gives up after four shaves has been an open complaint since 1971.
None of that asks you to buy anything. It is just a decent reason to read the back of a razor packet as advertising, and the first page of a razor patent as a confession. One of the two is free.
Frequently asked questions.
What was the last big change to the razor?
Depends what counts as big. New patents have never stopped coming — the five here run from 1971 to 2018. The more interesting question is what they were aimed at, and in these five the problem being fixed drifts further and further from your face.
Can I go and read razor patents myself?
Yes, and it is free. Google Patents has the full text of all five, linked at the bottom of this page. The trick is to ignore the diagrams and read the first page, because that is the bit where the company has to say what is still wrong.
Does a patent mean the thing was ever made?
Not at all. A patent covers an idea, not a product that works or a product that ships. The 2003 razor with the warning light is the proof: it was filed, published, and then quietly dropped.
Did Gillette admit that more blades cause irritation?
Not in those words, and we are not going to put them in anyone's mouth. What the 2011 filing says is that shaving discomfort comes partly from the number and sharpness of the blades and from the cumulative loading on the skin. That is narrower than a confession. It is still a strange thing to find in a Gillette document.
Keep reading.
- The money side of the same story: Why Are Razor Refills So Expensive?
- What becomes of the thing once the patents are done with it: What Happens to a Disposable Razor After You Throw It Out
- If you are weighing up the other kind of razor: Switching From a Cartridge Razor to a Single Blade
Sources.
- William Miller, US 3,768,161 — Razor with lubricant dispenser. Filed December 1971, granted October 1973. Individual inventor, no company.
- The Gillette Company, US 6,182,365 B1 — Skin engaging member for razor blade assembly. Priority July 1994, granted February 2001.
- Eveready Battery Company, now Edgewell Personal Care, US 2004/0098862 A1 — Razor system having razor sensors. Filed August 2003, published May 2004, abandoned.
- The Gillette Company, EP 2 537 648 A1 — Razor cartridge with skin contact element. Filed June 2011, published December 2012.
- BIC Violex, EP 3 536 468 A1 — Razor cartridge with lubricating strip. Filed March 2018, published September 2019.
Every quote above comes from the published text of the patent named beside it, and every one is linked so you can check it. "Fifty years" is rounded — the gap between the first filing and the last is forty-seven. We also have a dog in this fight: HONE makes a single-blade razor, so a Gillette filing that pins discomfort on cumulative load happens to suit us rather well. That is exactly why we quoted it instead of paraphrasing it. Written by The HONE Team. Published 23 October 2026.
