Why do razor blades last longer than they did 50 years ago?

Question

Gillette double blades were only good for two shaves before becoming dull. Today even the least expensive blade lasts for weeks.

Answer 1

50 years ago most razor blades were made of carbon steel. Today they are made from a stainless alloy. It is just that simple

Answer 2

Different alloys used for one. Old razors were apparantly made of a metal that was either softer or more prone to edge damage. Edge angle also determines how sharp something is. The technology might not have been there to, say, sharpen a razor at a 15 degree angle. However, the narrower the sharpening angel the more prone something is to dulling from repeated use. So, in short, its probably a combination of more optimal metals (where the edge can be taken down to a lower atom width without fear of damage) coupled with a more practical sharpening angle. I'm sure the angles are also more consistant these days because of technology.

Answer 3

I think you're rather lucky, I have a shave-retardent face. This means that I get two shaves maximum out of a new blade that are truly 'close' making shaving an expensive business.

But yes probably better alloys these days; although I still find cheap razors tend to carve my face up.

Answer 4

Better alloys of metal, sharper blades to begin with. Technology to do this cheap

Answer 5

I would think because they are made from a different kind of alloy or material. : )

Answer 6

magic