Reality vs patents ( < coming from people that they also are claiming that five-blade vibrating cartridges give the best shaves,
right ? )
(...)Cross-section of a Feather Super Pro Artist Club blade, often considered to be the “sharpest” commercial razor blade.
The blade is coated with a fluoropolymer that is removed with the first use. The Apex width is approximately 50nm, keener than any of the commercial blades shown above. The width at 3 microns is 1.4 microns, due to the 19 degree final bevel angle.(...)
https://scienceofsharp.com/2014/05/28/a-...ed-blades/
The unused edge #1 ,
of a Feather New HI-Stainless razor blade ,
as seen under the electron scanning microscope :
What you see is actually the Fluoropolymer ( PTFE ) coating .
Now ,the other blade edge ( #2 )used JUST for a SINGLE PASS :
Over 99% of the coating has left the building,before even Elvis did .
Bye-bye coating .
So much for the "comfortable shave" !
Do not let patents or false claims fool you :Fluoropolymer coatings are there to protect the blade's edge from corrosion ,
for long term storage and until the blades reach their final destination,their user that is.Nothing more ,nothing less.
There is not silica jel inside the blade's tuck in order to absorb moisture.Neither the blades are covered in oil,grease,wax or Cosmoline.But razor blade "stainless" steel alloys DO oxidize ( leave a blade on a DE razor after shaving ,without drying and see with your own eyes how "stainless" a razor blade is ).
Furthermore, since any coating whatsoever widens the edge's apex ,thus increasing the force
required for the blade to push-cut through
facial hair strands ,it's kinda false to claim that the x or y coating will add comfort to shaving ,just because the blade will supposedly have less friction with the hair strands being cut.
Think of this :
A sharp knife ,but say with pretty rough blade surfaces will cut through a material, multiple orders of magnitude ,better than a dull knife with an anti-friction coating deposited on it's blade surfaces.
Fluoropolymers are not there to make
the shave more comfortable.
That's a myth that should have been busted long ago .Like the one that claimed
that 5x razor blades will provide a better shave than a single blade razor.
Yeah,right...